7Surveyor Inverse Draft Survey Marine Surveyor Information
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Inverse Draft Survey | Marine Surveyor Information http://www.sevensurveyor.com/inverse-draft-survey/[6/30/2016 8:03:08 AM] About Survey & Surveyor » Downloads Video Software » Intermezzo » Terms of Use » Contact Us Posted By Surveyors on Mar 17, 2015 | 0 comments Home Draft Survey Inverse Draft Survey Inverse Draft Survey
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Transcript of 7Surveyor Inverse Draft Survey Marine Surveyor Information
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 19
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
About Survey amp Surveyor raquo Downloads Video Software raquo Intermezzo raquo Terms of Use raquo
Contact Us
Posted By Surveyors on Mar 17 2015 | 0 comments
Home Draft Survey Inverse Draft Survey
Inverse Draft Survey
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 29
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Few years ago I have received the email from friend that asked regarding Inverse Draft Survey
The Inverse Draft Survey is doing when the ship has to split the cargo for two or more ports Themethod is the same as common draft survey calculation what the ship officer or surveyor needs
to do is preventing cargo less or more discharge at the 1st port
What is the purpose
ndash To prevent cargo less or more discharge at one port
ndash Surveyor can organize the work effectively
ndash To prevent repetition of intermediate draft survey that cost a lot of time
How is inverse draft survey worksMV NORTH SEA has loaded 10000 MT cargo for China and Malaysia ports
As Bill of Lading shown
ndash 1st Port China with BL Quantity 4000 MT
ndash 2nd Port Malaysia with BL Quantity 6000 MT
At the 1st port the surveyor and ship officer carry out draft survey
On initial survey report the following
ndash Quarter Mean Draft 762 M
ndash Net displacement 1348720 MT
ndash Light Ship 330000 MT
ndash Constant 18700 MT
ndash Estimated cargo on board 1000020 MT
ndash Cargo to be discharged 400000 MT
ndash Balance for 2nd port 600020 MT
After doing initial survey the surveyor and ship officer will be estimated the final quarter mean
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 39
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
draft to reach the discharge at 400000 MT of cargo
To estimate this figure the ship officer discharging plan data is needed Such as how many
quantity final of ballast water fresh water FO and DO and expected trim (subject to change)
The calculation will be resulted the final draft survey quarter mean
Before having the draft survey program I usually doing the following rough calculation
1 Determine the Final Net displacement after discharging (FNDAD)FNDAD = Current Net displacement ndash Cargo to be discharged at first port
= 1348720 ndash 400000 = 948720 MT
2 Added with Estimate deductible after discharging
plus (+) Estimate final deductible (ballast FW FO DO)
letrsquos say deductible 34730 MT
= 948720 + 34730 = 983450 MT
3 Times (x) with sea water density and divide () with actual density
Where sea water density 1025 actual density 1021
= 983450 x 1025 1021 = 987303 MT
4 Plus (+) 1st and 2nd trim corrections (as per estimate vessel trim)
for example 1st correction = -1637 MT and 2nd correction = 125 MT
= 987303 + (-1637) + 125 = 985791 MT
5 Sum (=) corresponding displacement = 985791 MT
6 Check the quarter mean draft at the table refers to corresponding displacement985791 MT on hydrostatic table shown at Draft 629 M
7 Sum (=) estimate quarter mean draft for final survey = 629 M
Here the estimated final survey report after calculating
ndash Quarter Mean Draft 629 M
ndash Net displacement 948720 MT
ndash Light Ship 330000 MT
ndash Constant 18700 MT ndash Balance for 2nd port 600020 MT
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 49
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
How is reconciliation
As the quarter mean draft noted as rough figure the spare draft is given to prevent any cargo
losses usually the quarter mean draft plus (+) 5 cm to 10 cm For the above 629 + 005 = 634
M When the mid ship draftmarks is reaches 634 M the discharging will be stopped
During discharging the surveyor and ship officer will be monitoring the draftmarks (the key is at
the mid ship port and starboard side draftmarks)
The intermediate draft survey is carry out to check the actual cargo discharge For instance
When calculating the discharging cargo shows less about 10000 MT The rest is determined the
cargo discharge by counting the grabs Let says the grab capacity is 700 M3 with cargo
densitystowage factor is 150 TM3
gtgt 700 x 150 = 1050 MT cargo per lifting grab in full condition (If the less is more than 20000
MT the cargo per truck estimation quantity could be used)
Firstly deciding to discharge at 8 grabs for safer The last intermediate survey is made after that
Says the cargo less 2500 MT The next 2 and 12 grabs will be discharged to ensure the cargo
in conform for the 1st port
Then the actual final draft survey
ndash Quarter Mean Draft 6302 M (slightly different than estimated 0012 M)
ndash Net displacement 948710 MT
ndash Light Ship 330000 MT
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 59
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
ndash Constant 18700 MT
ndash Balance for 2nd port 600010 MT
As per 1st port final draft survey we are confidence that the 2nd port will receive the intended
cargo quantity as per document
Tips
ndash The declared constant is very important to check Collected the lastprevious 10 ships draftsurvey data to ensure the constant is right (at least last 3 shipments for loading and discharging)
ndash When the constant goes wrong and more than declared the 2nd port will be faced cargo
losses (Actual constant at 21000 MT but declaring at 18700 MT Cargo losses about 2300
MT)
ndash Considering the sea condition during survey In practice the sea condition was undermined the
draft survey (especially in the anchorage area) It needs to give more spare draft for final survey
The above as my survey experience and hope thatrsquos clear enough Please inform me whether
you have found another waysideas as I still learning about draft survey as well
Share this
Facebook 14 Twitter Google LinkedIn 4 Email
Related
Author Surveyors
Hi my name is Faisal Yusuf but people can call me Surveyors Here is my
homepage wwwsevensurveyorcom I live in Jakarta Indonesia and work as a
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 69
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Share This Post On
Say something Leave your track
surveyor
Recent Popular Random
VNET in Bunker Survey
Feb 5 2016
Procedure of Calculations Using
Density API amp RelativeDensity
Feb 3 2016
ASTM Table Series for OilSurvey
Feb 3 2016
Marine Surveyor Work
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 79
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Scopes
Nov 27 2015
Recent Videos
Detailed Draft survey step by stepwith animation video
Feb 6 2015
SurveyorMates Video
Mar 6 2014
Bunkering Best Practices (video)Dec 27 2013
Bunker Process (video)
Dec 27 2013
News ndash The International Institu te of
Small Craft Surveyors Forum Sehellip
by News Hound - Jun 23 2016On board the vessel ldquoOcean Scenerdquo at theSeawork pontoons in Southampton on 14June some 60 plus surveyors andinterested
Volvo Penta cuts down on componentshellip
Danish ships to be issued with digital chellip
Small Craft Surveyors Forum Seminar hellip
Transport Malta issues technical note hellip
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 89
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Our Top Authors
Subscribe by email to get latest
Information about Marine Surveyor
Archives
Archives Select Month
Tags
bunker calculation bunker survey Bunker
Survey Calculation cargo surveyors Dont Even Think To Read
This Post draft survey Draft Survey
Procedures and Calculation Draft Survey Specimen of
Calculation Draft Survey Terms of Conduct Draft Survey The
Accuracy and Factors Effecting Draft SurveyCalculation Draft Survey Onboard of the Vessel Draft
Survey Software draught survey gas calculationgas tanker Hold Cleanliness Survey How to
Conduct Bunker Survey iims Intermezzo Introduction inver se
draft survey lpg calculation marine cargo ship
surveyors marine cargosurveyor marine cargo surveyors
marine survey marinesurveyor Marine Surveyor Directory marine
surveyors marine surveyor school marine survey
software others Petroleum Calculation Series Definition
Petroleum Calculation Series Shipboard petroleumsurvey ship constant ship negative constant ship
survey Software for Surveyor Survey and Surveyor
Surveyors survey software tank sounding terms
Link
Sitemap
Surveyors
21 Posts
Faisal Yusuf
29 Posts
AISI ndash Indonesia
Bulk Online
IIMS
Marine Survey News
Marine Surveyor Directory
Select Month
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 99
rse Draft Survey | Marine Surveyor Information
Merchant Marine Polytechnics
Surveyor Samudra
copy2008-2016 Marine Surveyor Information by Seven Surve
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 29
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Few years ago I have received the email from friend that asked regarding Inverse Draft Survey
The Inverse Draft Survey is doing when the ship has to split the cargo for two or more ports Themethod is the same as common draft survey calculation what the ship officer or surveyor needs
to do is preventing cargo less or more discharge at the 1st port
What is the purpose
ndash To prevent cargo less or more discharge at one port
ndash Surveyor can organize the work effectively
ndash To prevent repetition of intermediate draft survey that cost a lot of time
How is inverse draft survey worksMV NORTH SEA has loaded 10000 MT cargo for China and Malaysia ports
As Bill of Lading shown
ndash 1st Port China with BL Quantity 4000 MT
ndash 2nd Port Malaysia with BL Quantity 6000 MT
At the 1st port the surveyor and ship officer carry out draft survey
On initial survey report the following
ndash Quarter Mean Draft 762 M
ndash Net displacement 1348720 MT
ndash Light Ship 330000 MT
ndash Constant 18700 MT
ndash Estimated cargo on board 1000020 MT
ndash Cargo to be discharged 400000 MT
ndash Balance for 2nd port 600020 MT
After doing initial survey the surveyor and ship officer will be estimated the final quarter mean
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 39
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
draft to reach the discharge at 400000 MT of cargo
To estimate this figure the ship officer discharging plan data is needed Such as how many
quantity final of ballast water fresh water FO and DO and expected trim (subject to change)
The calculation will be resulted the final draft survey quarter mean
Before having the draft survey program I usually doing the following rough calculation
1 Determine the Final Net displacement after discharging (FNDAD)FNDAD = Current Net displacement ndash Cargo to be discharged at first port
= 1348720 ndash 400000 = 948720 MT
2 Added with Estimate deductible after discharging
plus (+) Estimate final deductible (ballast FW FO DO)
letrsquos say deductible 34730 MT
= 948720 + 34730 = 983450 MT
3 Times (x) with sea water density and divide () with actual density
Where sea water density 1025 actual density 1021
= 983450 x 1025 1021 = 987303 MT
4 Plus (+) 1st and 2nd trim corrections (as per estimate vessel trim)
for example 1st correction = -1637 MT and 2nd correction = 125 MT
= 987303 + (-1637) + 125 = 985791 MT
5 Sum (=) corresponding displacement = 985791 MT
6 Check the quarter mean draft at the table refers to corresponding displacement985791 MT on hydrostatic table shown at Draft 629 M
7 Sum (=) estimate quarter mean draft for final survey = 629 M
Here the estimated final survey report after calculating
ndash Quarter Mean Draft 629 M
ndash Net displacement 948720 MT
ndash Light Ship 330000 MT
ndash Constant 18700 MT ndash Balance for 2nd port 600020 MT
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 49
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
How is reconciliation
As the quarter mean draft noted as rough figure the spare draft is given to prevent any cargo
losses usually the quarter mean draft plus (+) 5 cm to 10 cm For the above 629 + 005 = 634
M When the mid ship draftmarks is reaches 634 M the discharging will be stopped
During discharging the surveyor and ship officer will be monitoring the draftmarks (the key is at
the mid ship port and starboard side draftmarks)
The intermediate draft survey is carry out to check the actual cargo discharge For instance
When calculating the discharging cargo shows less about 10000 MT The rest is determined the
cargo discharge by counting the grabs Let says the grab capacity is 700 M3 with cargo
densitystowage factor is 150 TM3
gtgt 700 x 150 = 1050 MT cargo per lifting grab in full condition (If the less is more than 20000
MT the cargo per truck estimation quantity could be used)
Firstly deciding to discharge at 8 grabs for safer The last intermediate survey is made after that
Says the cargo less 2500 MT The next 2 and 12 grabs will be discharged to ensure the cargo
in conform for the 1st port
Then the actual final draft survey
ndash Quarter Mean Draft 6302 M (slightly different than estimated 0012 M)
ndash Net displacement 948710 MT
ndash Light Ship 330000 MT
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 59
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
ndash Constant 18700 MT
ndash Balance for 2nd port 600010 MT
As per 1st port final draft survey we are confidence that the 2nd port will receive the intended
cargo quantity as per document
Tips
ndash The declared constant is very important to check Collected the lastprevious 10 ships draftsurvey data to ensure the constant is right (at least last 3 shipments for loading and discharging)
ndash When the constant goes wrong and more than declared the 2nd port will be faced cargo
losses (Actual constant at 21000 MT but declaring at 18700 MT Cargo losses about 2300
MT)
ndash Considering the sea condition during survey In practice the sea condition was undermined the
draft survey (especially in the anchorage area) It needs to give more spare draft for final survey
The above as my survey experience and hope thatrsquos clear enough Please inform me whether
you have found another waysideas as I still learning about draft survey as well
Share this
Facebook 14 Twitter Google LinkedIn 4 Email
Related
Author Surveyors
Hi my name is Faisal Yusuf but people can call me Surveyors Here is my
homepage wwwsevensurveyorcom I live in Jakarta Indonesia and work as a
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 69
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Share This Post On
Say something Leave your track
surveyor
Recent Popular Random
VNET in Bunker Survey
Feb 5 2016
Procedure of Calculations Using
Density API amp RelativeDensity
Feb 3 2016
ASTM Table Series for OilSurvey
Feb 3 2016
Marine Surveyor Work
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 79
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Scopes
Nov 27 2015
Recent Videos
Detailed Draft survey step by stepwith animation video
Feb 6 2015
SurveyorMates Video
Mar 6 2014
Bunkering Best Practices (video)Dec 27 2013
Bunker Process (video)
Dec 27 2013
News ndash The International Institu te of
Small Craft Surveyors Forum Sehellip
by News Hound - Jun 23 2016On board the vessel ldquoOcean Scenerdquo at theSeawork pontoons in Southampton on 14June some 60 plus surveyors andinterested
Volvo Penta cuts down on componentshellip
Danish ships to be issued with digital chellip
Small Craft Surveyors Forum Seminar hellip
Transport Malta issues technical note hellip
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 89
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Our Top Authors
Subscribe by email to get latest
Information about Marine Surveyor
Archives
Archives Select Month
Tags
bunker calculation bunker survey Bunker
Survey Calculation cargo surveyors Dont Even Think To Read
This Post draft survey Draft Survey
Procedures and Calculation Draft Survey Specimen of
Calculation Draft Survey Terms of Conduct Draft Survey The
Accuracy and Factors Effecting Draft SurveyCalculation Draft Survey Onboard of the Vessel Draft
Survey Software draught survey gas calculationgas tanker Hold Cleanliness Survey How to
Conduct Bunker Survey iims Intermezzo Introduction inver se
draft survey lpg calculation marine cargo ship
surveyors marine cargosurveyor marine cargo surveyors
marine survey marinesurveyor Marine Surveyor Directory marine
surveyors marine surveyor school marine survey
software others Petroleum Calculation Series Definition
Petroleum Calculation Series Shipboard petroleumsurvey ship constant ship negative constant ship
survey Software for Surveyor Survey and Surveyor
Surveyors survey software tank sounding terms
Link
Sitemap
Surveyors
21 Posts
Faisal Yusuf
29 Posts
AISI ndash Indonesia
Bulk Online
IIMS
Marine Survey News
Marine Surveyor Directory
Select Month
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 99
rse Draft Survey | Marine Surveyor Information
Merchant Marine Polytechnics
Surveyor Samudra
copy2008-2016 Marine Surveyor Information by Seven Surve
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 39
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
draft to reach the discharge at 400000 MT of cargo
To estimate this figure the ship officer discharging plan data is needed Such as how many
quantity final of ballast water fresh water FO and DO and expected trim (subject to change)
The calculation will be resulted the final draft survey quarter mean
Before having the draft survey program I usually doing the following rough calculation
1 Determine the Final Net displacement after discharging (FNDAD)FNDAD = Current Net displacement ndash Cargo to be discharged at first port
= 1348720 ndash 400000 = 948720 MT
2 Added with Estimate deductible after discharging
plus (+) Estimate final deductible (ballast FW FO DO)
letrsquos say deductible 34730 MT
= 948720 + 34730 = 983450 MT
3 Times (x) with sea water density and divide () with actual density
Where sea water density 1025 actual density 1021
= 983450 x 1025 1021 = 987303 MT
4 Plus (+) 1st and 2nd trim corrections (as per estimate vessel trim)
for example 1st correction = -1637 MT and 2nd correction = 125 MT
= 987303 + (-1637) + 125 = 985791 MT
5 Sum (=) corresponding displacement = 985791 MT
6 Check the quarter mean draft at the table refers to corresponding displacement985791 MT on hydrostatic table shown at Draft 629 M
7 Sum (=) estimate quarter mean draft for final survey = 629 M
Here the estimated final survey report after calculating
ndash Quarter Mean Draft 629 M
ndash Net displacement 948720 MT
ndash Light Ship 330000 MT
ndash Constant 18700 MT ndash Balance for 2nd port 600020 MT
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 49
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
How is reconciliation
As the quarter mean draft noted as rough figure the spare draft is given to prevent any cargo
losses usually the quarter mean draft plus (+) 5 cm to 10 cm For the above 629 + 005 = 634
M When the mid ship draftmarks is reaches 634 M the discharging will be stopped
During discharging the surveyor and ship officer will be monitoring the draftmarks (the key is at
the mid ship port and starboard side draftmarks)
The intermediate draft survey is carry out to check the actual cargo discharge For instance
When calculating the discharging cargo shows less about 10000 MT The rest is determined the
cargo discharge by counting the grabs Let says the grab capacity is 700 M3 with cargo
densitystowage factor is 150 TM3
gtgt 700 x 150 = 1050 MT cargo per lifting grab in full condition (If the less is more than 20000
MT the cargo per truck estimation quantity could be used)
Firstly deciding to discharge at 8 grabs for safer The last intermediate survey is made after that
Says the cargo less 2500 MT The next 2 and 12 grabs will be discharged to ensure the cargo
in conform for the 1st port
Then the actual final draft survey
ndash Quarter Mean Draft 6302 M (slightly different than estimated 0012 M)
ndash Net displacement 948710 MT
ndash Light Ship 330000 MT
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 59
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
ndash Constant 18700 MT
ndash Balance for 2nd port 600010 MT
As per 1st port final draft survey we are confidence that the 2nd port will receive the intended
cargo quantity as per document
Tips
ndash The declared constant is very important to check Collected the lastprevious 10 ships draftsurvey data to ensure the constant is right (at least last 3 shipments for loading and discharging)
ndash When the constant goes wrong and more than declared the 2nd port will be faced cargo
losses (Actual constant at 21000 MT but declaring at 18700 MT Cargo losses about 2300
MT)
ndash Considering the sea condition during survey In practice the sea condition was undermined the
draft survey (especially in the anchorage area) It needs to give more spare draft for final survey
The above as my survey experience and hope thatrsquos clear enough Please inform me whether
you have found another waysideas as I still learning about draft survey as well
Share this
Facebook 14 Twitter Google LinkedIn 4 Email
Related
Author Surveyors
Hi my name is Faisal Yusuf but people can call me Surveyors Here is my
homepage wwwsevensurveyorcom I live in Jakarta Indonesia and work as a
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 69
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Share This Post On
Say something Leave your track
surveyor
Recent Popular Random
VNET in Bunker Survey
Feb 5 2016
Procedure of Calculations Using
Density API amp RelativeDensity
Feb 3 2016
ASTM Table Series for OilSurvey
Feb 3 2016
Marine Surveyor Work
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 79
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Scopes
Nov 27 2015
Recent Videos
Detailed Draft survey step by stepwith animation video
Feb 6 2015
SurveyorMates Video
Mar 6 2014
Bunkering Best Practices (video)Dec 27 2013
Bunker Process (video)
Dec 27 2013
News ndash The International Institu te of
Small Craft Surveyors Forum Sehellip
by News Hound - Jun 23 2016On board the vessel ldquoOcean Scenerdquo at theSeawork pontoons in Southampton on 14June some 60 plus surveyors andinterested
Volvo Penta cuts down on componentshellip
Danish ships to be issued with digital chellip
Small Craft Surveyors Forum Seminar hellip
Transport Malta issues technical note hellip
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 89
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Our Top Authors
Subscribe by email to get latest
Information about Marine Surveyor
Archives
Archives Select Month
Tags
bunker calculation bunker survey Bunker
Survey Calculation cargo surveyors Dont Even Think To Read
This Post draft survey Draft Survey
Procedures and Calculation Draft Survey Specimen of
Calculation Draft Survey Terms of Conduct Draft Survey The
Accuracy and Factors Effecting Draft SurveyCalculation Draft Survey Onboard of the Vessel Draft
Survey Software draught survey gas calculationgas tanker Hold Cleanliness Survey How to
Conduct Bunker Survey iims Intermezzo Introduction inver se
draft survey lpg calculation marine cargo ship
surveyors marine cargosurveyor marine cargo surveyors
marine survey marinesurveyor Marine Surveyor Directory marine
surveyors marine surveyor school marine survey
software others Petroleum Calculation Series Definition
Petroleum Calculation Series Shipboard petroleumsurvey ship constant ship negative constant ship
survey Software for Surveyor Survey and Surveyor
Surveyors survey software tank sounding terms
Link
Sitemap
Surveyors
21 Posts
Faisal Yusuf
29 Posts
AISI ndash Indonesia
Bulk Online
IIMS
Marine Survey News
Marine Surveyor Directory
Select Month
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 99
rse Draft Survey | Marine Surveyor Information
Merchant Marine Polytechnics
Surveyor Samudra
copy2008-2016 Marine Surveyor Information by Seven Surve
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 49
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
How is reconciliation
As the quarter mean draft noted as rough figure the spare draft is given to prevent any cargo
losses usually the quarter mean draft plus (+) 5 cm to 10 cm For the above 629 + 005 = 634
M When the mid ship draftmarks is reaches 634 M the discharging will be stopped
During discharging the surveyor and ship officer will be monitoring the draftmarks (the key is at
the mid ship port and starboard side draftmarks)
The intermediate draft survey is carry out to check the actual cargo discharge For instance
When calculating the discharging cargo shows less about 10000 MT The rest is determined the
cargo discharge by counting the grabs Let says the grab capacity is 700 M3 with cargo
densitystowage factor is 150 TM3
gtgt 700 x 150 = 1050 MT cargo per lifting grab in full condition (If the less is more than 20000
MT the cargo per truck estimation quantity could be used)
Firstly deciding to discharge at 8 grabs for safer The last intermediate survey is made after that
Says the cargo less 2500 MT The next 2 and 12 grabs will be discharged to ensure the cargo
in conform for the 1st port
Then the actual final draft survey
ndash Quarter Mean Draft 6302 M (slightly different than estimated 0012 M)
ndash Net displacement 948710 MT
ndash Light Ship 330000 MT
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 59
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
ndash Constant 18700 MT
ndash Balance for 2nd port 600010 MT
As per 1st port final draft survey we are confidence that the 2nd port will receive the intended
cargo quantity as per document
Tips
ndash The declared constant is very important to check Collected the lastprevious 10 ships draftsurvey data to ensure the constant is right (at least last 3 shipments for loading and discharging)
ndash When the constant goes wrong and more than declared the 2nd port will be faced cargo
losses (Actual constant at 21000 MT but declaring at 18700 MT Cargo losses about 2300
MT)
ndash Considering the sea condition during survey In practice the sea condition was undermined the
draft survey (especially in the anchorage area) It needs to give more spare draft for final survey
The above as my survey experience and hope thatrsquos clear enough Please inform me whether
you have found another waysideas as I still learning about draft survey as well
Share this
Facebook 14 Twitter Google LinkedIn 4 Email
Related
Author Surveyors
Hi my name is Faisal Yusuf but people can call me Surveyors Here is my
homepage wwwsevensurveyorcom I live in Jakarta Indonesia and work as a
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
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rse Draft Survey | Marine Surveyor Information
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rse Draft Survey | Marine Surveyor Information
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7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
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rse Draft Survey | Marine Surveyor Information
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Surveyor Samudra
copy2008-2016 Marine Surveyor Information by Seven Surve
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
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rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
ndash Constant 18700 MT
ndash Balance for 2nd port 600010 MT
As per 1st port final draft survey we are confidence that the 2nd port will receive the intended
cargo quantity as per document
Tips
ndash The declared constant is very important to check Collected the lastprevious 10 ships draftsurvey data to ensure the constant is right (at least last 3 shipments for loading and discharging)
ndash When the constant goes wrong and more than declared the 2nd port will be faced cargo
losses (Actual constant at 21000 MT but declaring at 18700 MT Cargo losses about 2300
MT)
ndash Considering the sea condition during survey In practice the sea condition was undermined the
draft survey (especially in the anchorage area) It needs to give more spare draft for final survey
The above as my survey experience and hope thatrsquos clear enough Please inform me whether
you have found another waysideas as I still learning about draft survey as well
Share this
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Related
Author Surveyors
Hi my name is Faisal Yusuf but people can call me Surveyors Here is my
homepage wwwsevensurveyorcom I live in Jakarta Indonesia and work as a
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 69
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Share This Post On
Say something Leave your track
surveyor
Recent Popular Random
VNET in Bunker Survey
Feb 5 2016
Procedure of Calculations Using
Density API amp RelativeDensity
Feb 3 2016
ASTM Table Series for OilSurvey
Feb 3 2016
Marine Surveyor Work
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 79
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Scopes
Nov 27 2015
Recent Videos
Detailed Draft survey step by stepwith animation video
Feb 6 2015
SurveyorMates Video
Mar 6 2014
Bunkering Best Practices (video)Dec 27 2013
Bunker Process (video)
Dec 27 2013
News ndash The International Institu te of
Small Craft Surveyors Forum Sehellip
by News Hound - Jun 23 2016On board the vessel ldquoOcean Scenerdquo at theSeawork pontoons in Southampton on 14June some 60 plus surveyors andinterested
Volvo Penta cuts down on componentshellip
Danish ships to be issued with digital chellip
Small Craft Surveyors Forum Seminar hellip
Transport Malta issues technical note hellip
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 89
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Our Top Authors
Subscribe by email to get latest
Information about Marine Surveyor
Archives
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Tags
bunker calculation bunker survey Bunker
Survey Calculation cargo surveyors Dont Even Think To Read
This Post draft survey Draft Survey
Procedures and Calculation Draft Survey Specimen of
Calculation Draft Survey Terms of Conduct Draft Survey The
Accuracy and Factors Effecting Draft SurveyCalculation Draft Survey Onboard of the Vessel Draft
Survey Software draught survey gas calculationgas tanker Hold Cleanliness Survey How to
Conduct Bunker Survey iims Intermezzo Introduction inver se
draft survey lpg calculation marine cargo ship
surveyors marine cargosurveyor marine cargo surveyors
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surveyors marine surveyor school marine survey
software others Petroleum Calculation Series Definition
Petroleum Calculation Series Shipboard petroleumsurvey ship constant ship negative constant ship
survey Software for Surveyor Survey and Surveyor
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Link
Sitemap
Surveyors
21 Posts
Faisal Yusuf
29 Posts
AISI ndash Indonesia
Bulk Online
IIMS
Marine Survey News
Marine Surveyor Directory
Select Month
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 99
rse Draft Survey | Marine Surveyor Information
Merchant Marine Polytechnics
Surveyor Samudra
copy2008-2016 Marine Surveyor Information by Seven Surve
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 69
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Share This Post On
Say something Leave your track
surveyor
Recent Popular Random
VNET in Bunker Survey
Feb 5 2016
Procedure of Calculations Using
Density API amp RelativeDensity
Feb 3 2016
ASTM Table Series for OilSurvey
Feb 3 2016
Marine Surveyor Work
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 79
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Scopes
Nov 27 2015
Recent Videos
Detailed Draft survey step by stepwith animation video
Feb 6 2015
SurveyorMates Video
Mar 6 2014
Bunkering Best Practices (video)Dec 27 2013
Bunker Process (video)
Dec 27 2013
News ndash The International Institu te of
Small Craft Surveyors Forum Sehellip
by News Hound - Jun 23 2016On board the vessel ldquoOcean Scenerdquo at theSeawork pontoons in Southampton on 14June some 60 plus surveyors andinterested
Volvo Penta cuts down on componentshellip
Danish ships to be issued with digital chellip
Small Craft Surveyors Forum Seminar hellip
Transport Malta issues technical note hellip
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 89
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Our Top Authors
Subscribe by email to get latest
Information about Marine Surveyor
Archives
Archives Select Month
Tags
bunker calculation bunker survey Bunker
Survey Calculation cargo surveyors Dont Even Think To Read
This Post draft survey Draft Survey
Procedures and Calculation Draft Survey Specimen of
Calculation Draft Survey Terms of Conduct Draft Survey The
Accuracy and Factors Effecting Draft SurveyCalculation Draft Survey Onboard of the Vessel Draft
Survey Software draught survey gas calculationgas tanker Hold Cleanliness Survey How to
Conduct Bunker Survey iims Intermezzo Introduction inver se
draft survey lpg calculation marine cargo ship
surveyors marine cargosurveyor marine cargo surveyors
marine survey marinesurveyor Marine Surveyor Directory marine
surveyors marine surveyor school marine survey
software others Petroleum Calculation Series Definition
Petroleum Calculation Series Shipboard petroleumsurvey ship constant ship negative constant ship
survey Software for Surveyor Survey and Surveyor
Surveyors survey software tank sounding terms
Link
Sitemap
Surveyors
21 Posts
Faisal Yusuf
29 Posts
AISI ndash Indonesia
Bulk Online
IIMS
Marine Survey News
Marine Surveyor Directory
Select Month
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 99
rse Draft Survey | Marine Surveyor Information
Merchant Marine Polytechnics
Surveyor Samudra
copy2008-2016 Marine Surveyor Information by Seven Surve
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 79
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Scopes
Nov 27 2015
Recent Videos
Detailed Draft survey step by stepwith animation video
Feb 6 2015
SurveyorMates Video
Mar 6 2014
Bunkering Best Practices (video)Dec 27 2013
Bunker Process (video)
Dec 27 2013
News ndash The International Institu te of
Small Craft Surveyors Forum Sehellip
by News Hound - Jun 23 2016On board the vessel ldquoOcean Scenerdquo at theSeawork pontoons in Southampton on 14June some 60 plus surveyors andinterested
Volvo Penta cuts down on componentshellip
Danish ships to be issued with digital chellip
Small Craft Surveyors Forum Seminar hellip
Transport Malta issues technical note hellip
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 89
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Our Top Authors
Subscribe by email to get latest
Information about Marine Surveyor
Archives
Archives Select Month
Tags
bunker calculation bunker survey Bunker
Survey Calculation cargo surveyors Dont Even Think To Read
This Post draft survey Draft Survey
Procedures and Calculation Draft Survey Specimen of
Calculation Draft Survey Terms of Conduct Draft Survey The
Accuracy and Factors Effecting Draft SurveyCalculation Draft Survey Onboard of the Vessel Draft
Survey Software draught survey gas calculationgas tanker Hold Cleanliness Survey How to
Conduct Bunker Survey iims Intermezzo Introduction inver se
draft survey lpg calculation marine cargo ship
surveyors marine cargosurveyor marine cargo surveyors
marine survey marinesurveyor Marine Surveyor Directory marine
surveyors marine surveyor school marine survey
software others Petroleum Calculation Series Definition
Petroleum Calculation Series Shipboard petroleumsurvey ship constant ship negative constant ship
survey Software for Surveyor Survey and Surveyor
Surveyors survey software tank sounding terms
Link
Sitemap
Surveyors
21 Posts
Faisal Yusuf
29 Posts
AISI ndash Indonesia
Bulk Online
IIMS
Marine Survey News
Marine Surveyor Directory
Select Month
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 99
rse Draft Survey | Marine Surveyor Information
Merchant Marine Polytechnics
Surveyor Samudra
copy2008-2016 Marine Surveyor Information by Seven Surve
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 89
rse Draft Survey | Marine Surveyor Information
wwwsevensurveyorcominverse-draft-survey[6302016 80308 AM]
Our Top Authors
Subscribe by email to get latest
Information about Marine Surveyor
Archives
Archives Select Month
Tags
bunker calculation bunker survey Bunker
Survey Calculation cargo surveyors Dont Even Think To Read
This Post draft survey Draft Survey
Procedures and Calculation Draft Survey Specimen of
Calculation Draft Survey Terms of Conduct Draft Survey The
Accuracy and Factors Effecting Draft SurveyCalculation Draft Survey Onboard of the Vessel Draft
Survey Software draught survey gas calculationgas tanker Hold Cleanliness Survey How to
Conduct Bunker Survey iims Intermezzo Introduction inver se
draft survey lpg calculation marine cargo ship
surveyors marine cargosurveyor marine cargo surveyors
marine survey marinesurveyor Marine Surveyor Directory marine
surveyors marine surveyor school marine survey
software others Petroleum Calculation Series Definition
Petroleum Calculation Series Shipboard petroleumsurvey ship constant ship negative constant ship
survey Software for Surveyor Survey and Surveyor
Surveyors survey software tank sounding terms
Link
Sitemap
Surveyors
21 Posts
Faisal Yusuf
29 Posts
AISI ndash Indonesia
Bulk Online
IIMS
Marine Survey News
Marine Surveyor Directory
Select Month
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 99
rse Draft Survey | Marine Surveyor Information
Merchant Marine Polytechnics
Surveyor Samudra
copy2008-2016 Marine Surveyor Information by Seven Surve
7252019 7Surveyor Inverse Draft Survey Marine Surveyor Information
httpslidepdfcomreaderfull7surveyor-inverse-draft-survey-marine-surveyor-information 99
rse Draft Survey | Marine Surveyor Information
Merchant Marine Polytechnics
Surveyor Samudra
copy2008-2016 Marine Surveyor Information by Seven Surve
