ORV - SAGAR KANYA CRUISE REPORT

Cruise No: SN 346

DEPLOYMENT AND RETRIEVAL OF OMNI BUOYS AND TSUNAMI BUOY IN BAY OF BENGAL (19th FEBRUARY 2018 to 27th MARCH 2018)

Report No. : NIOT/OOS/CR-135/2018/01

समु� � े� ण �णाल� / Ocean Observation Systems रा� ��य समु� � ौ�यो�गक� सं� थान / National Institute of Ocean Technology

(प�ृ वी �व� ान मं�ालय, भारत सरकार) / (Ministry of Earth Sciences, Govt. of India) प� ल�करण,ै चे� न ै– 600 100/ Pallikaranai, Chennai – 600 100

�वारा तैयार / Prepared By

�वारा स�या�पत / Verified By

�वारा समी� ा / Reviewed By

�वारा अनमुो�दत / Approved By

K.THIRUMURUGAN

M.SARAVANAN

R.SRIDHARAN

N.SUNDARAVADIVEL

P.RAMESH

एम. अ�ल मुततै्या / M.ARULMUTHIAH

समूह �धान / GROUP HEAD

�नदेशक महोद DIRECTOR

द�तावेज़ �नय�ंण शीट / DOCUMENT CONTROL SHEET

1. �रपोट� सं. / Report No. NIOT/OOS/CR-135/2018/01 2. �काशन �त�थ / Publication date 3. शीष�क और उपशीष�क / Title and Subtitle SK 346 Cruise Report 4. �रपोट� का �कार / Type of Report Deployment / Retrieval of OMNI & Tsunami Buoy 5. प�ृठ सं�या / Number of pages 6. लेखक / Authors K.THIRUMURUGAN M.SARAVANAN R.SRIDHARAN N.SUNDARAVADIVELU P.RAMESH 7. इकाई का उ� व / Originating Unit समु� � े� ण �णाल� / Ocean Observation Systems 8. सार / Abstract This document proves complete cruise activity 9. मु�य श�द / Key words Deployment and Retrieval of BD14,BD12,TB09,BD09,BD08,BD13, BD11 10. सुर� ा वग�करण / Security classification Unrestricted to OOS team

पावती / ACKNOWLEDGEMENT

We express our sincere gratitude to our beloved Director Dr.M.A.Atmanand NIOT for providing us

the opportunity as well as the necessary facilities to carry out the expedition.

We express our sincere thanks to our Group Head Dr. R. Venkatesan, Ocean Observation Systems,

NIOT for his constant guidance, encouragement and support during the entire course of this cruise.

We are very grateful to Director NCAOR and VOM Group Head for providing ORV Sagar Kanya ship at

the required time for the successful completion of cruise.

Our sincere thanks to Capt.S.R. Lokhande, Officers and Crew of ORV Sagar Kanya for their valuable

cooperation throughout the cruise and for the help and support extended us to complete the task.

We are also thankful to NCAOR team, OOS team, NORINCO team and Electronik lab for helping us at

various stages for successful completion of the cruise.

�वषय सूची / TABLE OF CONTENTS

अ�ययन सं. Chapter No.

�ववरण / Description प�ृठ सं. / Page No. 1 � ुज़ ल�य / Objective of the Cruise 1 2 � ुज़ ट�म / Cruise Team 1 3 � ुज़ � ैक / Cruise Track 2 4 � ूज साराशं / Cruise summary 3 5 दै�नक ग�त�व�धय� का �ववरण / Details of Day to day Activities 4

Annexure I Mooring Layout 13 II Retrieval & Deployment Photos 20

1

CHAPTER 1

� ुज़ ल�य / OBJECTIVES OF THE CRUISE

The cruise SK 346 is dedicated to retrieval and deployment of 7 OMNI buoys and 1 Tsunami buoy system in Bay of Bengal. The cruise team onboard ORV Sagar Kanya on 19th February 2018 from Tuticorin to 27th March 2018 Chennai to expedite and to complete this task.

CHAPTER 2

� ुज़ ट�म / NIOT CRUISE TEAM

� म सं. /

S. No. नाम / Name सगंठन / Organization Designation

1. THIRUMURUGAN KARUPPIAH NIOT, Chennai Chief Scientist

2. SARAVANAN MANICKAM NIOT, Chennai Dy. Chief Scientist

3. SRIDHARAN RAMALINGAM NIOT, Chennai Scientific Assistant

4. SUNDARAVADIVELU NAGARAJAN NIOT,Chennai Scientific Assistant

5. RAMESH PUNNIAMOORTHY NIOT,Chennai Technician

6. SARAVANAN JAYAVELU M/s Norinco, Chennai Field Engineer

7. KINATTINKARA VEETTIL HARIKRISHNAN

M/s Norinco, Chennai Field Engineer

8. MOHAMED ISMAIL RAJAK M/s Norinco, Chennai Field Engineer

9. BALACHANDRA JATTI PATGAR M/s Norinco, Chennai Technician

10. EMAYAVARAMBAN SELVARAJ M/s Elektronik lab, Chennai Deployment Assistant

11. UDHAYAKUMAR RAJI M/s Elektronik lab, Chennai Deployment Assistant

12. PRAVEEN KUMAR M/s Elektronik lab, Chennai Deployment Assistant

13. THIVAKAR SANKAR M/s Elektronik lab, Chennai Deployment Assistant

14. JAGAN KUMAR M/s Elektronik lab, Chennai Deployment Assistant

15. SUBRAMANIAN NATESAN M/s Elektronik lab, Chennai Deployment Assistant

2

CHAPTER 3

ज़ � ैक / CRUISE TRACK

Buoy Id Latitude ( N ) Longitude ( E ) Depth ( m) Remarks BD14 06°34’38.4” 88°14’00” 3830 Retrieval & Deployment BD12 10°26’50.4” 94°01’26.4” 3104 Retrieval & Deployment TB09 17°13’43.15” 90°00’53.52” 2060 Retrieval & Deployment BD09 17°27’59.4” 89°07’00” 2320 Retrieval & Deployment BD08 17°47’28.9” 89°12’59.76” 2142 Retrieval & Deployment BD10 16°28'41.51” 87°58'52.07” 2684 Retrieval & Deployment BD13 13°58'24.98” 86°56'49.8” 3024 Retrieval & Deployment BD11 13°29'50.62” 84°09'40.09” 3260 Retrieval & Deployment

3

CHAPTER 4

CRUISE SUMMARY

The cruise operation was arranged by OOS, NIOT during Feb 2018 to deployment and

retrieval of MET, WAVE, Tsunami buoy systems. Cruise team sailed from Tuticorin port on 19th Feb

2018 onboard ORV Sagar Kanya (SN-346). Team reached each buoy location on the respective dates

(given in the table) and buoy deployment and retrieval operations were successfully carried out.

SI. No

DATE STATION

ID OPERATION

LOCATION STATION DEPTH Latitude Longitude

1. 28.02.2018 BD 14 Buoy Retrieval 06°34"78 N 088°12"25 E 3830 m

2. 01.03.2018 BD 14 Buoy

Deployment 06°34.75 N 088°19.16 E 3830 m

3. 04.03.2018 BD 12 Buoy Retrieval 10°23.55 N 093°56.57 E 3104 m

4. 05.03.2018 BD 12 Buoy

Deployment 10°30.23 N 094°02.10 E 3050 m

5. 15.03.2018 TB 09 Buoy Retrieval 17°14.18 N 090°00.75 E 2060 m

6. 15.03.2018 TB 09 Surface Buoy Deployment

17°15.68 N 089°58.84 E 2320 m

7. 16.03.2018 BD 08 Buoy Retrieval 17°47.200'N 89°13.189'E 2142 m

8. 16.03.2018 BD 08 Buoy

Deployment 17°49.868 N 089°13.549 E 2150 m

9. 17.03.2018 BD 09 Buoy Retrieval 17°27.297'N 89°06.207'E 2320 m

10. 17.03.2018 BD 09 Buoy

Deployment 17°29.578 N 089°07.741 E 2300 m

11. 19.03.2018 TB09 BPR

Deployment 17°15.896 N 089°59.105 E 2320 m

12. 23.03.2018 BD 13 Buoy Retrieval 13°59.170" N 086°57.932" E 3024 m

13. 23.03.2018 BD 13 Buoy

Deployment 14°02.023 N 087°00.040 E 3000 m

14. 25.03.2018 BD 11 Buoy Retrieval 13°28.252" N 084°07.382" E 3260 m

15. 25.03.2018 BD 11 Buoy

Deployment 13°30.664 N 084°10.874 E 3235 m

4

CHAPTER 5

दै�नक ग�त�व�धय� का �ववरण / DETAILS OF DAY BY DAY ACTIVITIES This chapter describes the details of day to activities carried out during the cruise. 19 - February - 2018

14:30 Hrs Scientific cruise participants were completed the signed on. 16:30 Hrs Scientific cruise participants were reported ship. 17:00 Hrs Accommodation allotted to all the participants. 18:30 Hrs Chief scientist handed over all the cruise participants passport and medical certificate

to Master. 19:00 Hrs Started the loading the materials to ship from 17 trucks

20- February – 2018

02:30 Hrs completed the Materials Loading to ship 10:30 Hrs All the materials were properly lashed in deck and updated to the Master and chief officer. 03:00 Hrs CT sensors cleaning work 05:00 Hrs Zinc anodes fixed on keel weight

21 – February – 2018

08:30 Hrs Started the BD14 buoy sensor assembly work. 10:30 Hrs 12:00 Hrs

Mounted the Capstan winch on deck and tested the operational performance. CT sensors Cleaning and change new batter for BD14

14:00 Hrs Fasteners segregation work 16:00 Hrs Sensor arm cleaning and fixed all the met sensors on sensor arm

22 – February – 2018

08:30 Hrs Induction cable marking work. 12:30 Hrs Sending for BD14 BUOY CFG File and Sensors Print short in NIOT. 14:00 Hrs 16:00 Hrs 17:00 Hrs

Started the assembly BD12 Buoy CT sensors Cleaning and change new batter for BD12 Initiated the BD 14 buoy onboard testing

23 – February – 2018

09:00 Hrs Checked the met sensors and CT,DVS and ADCP . 10:30 Hrs Sending for BD12 BUOY CFG File and Sensors Print screen short to NIOT 12:00 Hrs 16:00 Hrs 17:00 Hrs

Vessel started sailing towards BD14 location. All the participants attended the ship safety drill conducted by the Master BD 12 buoy CT sensors Cupper Guard cleaning and fixed the sensors.

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24 – February – 2018

09:00 Hrs Mast and sensors assembled on BD14 buoy 10:00 Hrs Scientific team meeting with Master and ship officials about cruise plan and activities 11:00 Hrs Started the assembly of keel frame and keel weight and the attached to BD14 buoy

instrument container. 15:00 Hrs Checked the met sensors and CT ,DVS and ADCP 16:00 Hrs Checking for CFG File and Sensors Print screen short 17:00 Hrs 18:00 Hrs

Rooted the Mast cable and sensor arm. Anti vandal flange was fixed. Initiated the BD14 & BD 12 INSAT and CLS ARGO testing.

25 – February – 2018

09:00 Hrs CT sensors Cleaning and change new batter for BD08. 10:00 Hrs 11:00 Hrs 14:00 Hrs 14:30 Hrs

Assembled sensors on frames. ADCP cable was rooted through protection hose. Checked the met sensors and CT, DVS and ADCP for BD 08. Induction cable marking was done for BD 12 buoy.

26 – February – 2018

09:00 Hrs Visual Inspection of Glass floats for BD 14 & BD 12 (Total 12 Nos) Glass floats 06 numbers were assembled with 7.5 m length chain.

11:00 Hrs 12:00 Hrs 15:00 Hrs 16:00 Hrs 17:00 Hrs

BPR battery changed. Cleaned the CT sensors for BD 08 buoy. The BD 08 buoy onboard testing was initiated. Changed the BPR battery. Checked the OBM and Boat. The OBM performance was checked.

27 – February – 2018

09:00 Hrs Cupper guard and nylon bush was assembled with CT sensors. 10:30 Hrs 12:00 Hrs 16:00 Hrs 17:00 Hrs

Upper mast painting work. Fixed the radar reflector and CT sensor mounted on hull. BD 14 buoy ID and NIOT logo was painted on buoy hull and hood. CT sensors 1 m and 5 m was fixed on the keel frame and ADCP frame.

28 – February – 2018

11:00 Hrs Ship was reached to BD 14 location and sighted the buoy. 11:10 Hrs 12:30 Hrs 13:00 Hrs 13:50 Hrs 14:00 Hrs 14:40 Hrs 15:00 Hrs 15:15 Hrs 15:30 Hrs

Started ship CTD castle Completed the CTD castle. Position the Ship for release the BD 14 buoy. Dunker Lowered for release Command. Release Command executed. Received the Acknowledgement from acoustic release. Boat on water. Buoy retrieval started at Lat : 06°34"78 N Long: 088°12"25 E Buoy on deck.

6

15:45 Hrs 16:20 Hrs 17:00 Hrs 18:15 Hrs 18:30 Hrs 20:30 Hrs 22:45 Hrs

Boat on deck. Retrieved all CT sensors. Retrieved Nylon rope and Green floats. Retrieved all PP ropes. Retrieved acoustic release and Glass floats. Started the Bathymetry Survey in BD 14 deployment location Completed the Bathymetry survey.

01 – March – 2018

09:00 Hrs 10:00 Hrs 10:28 Hrs 11:00 Hrs 11:25 Hrs 12:25 Hrs 12:30 Hrs 13:00 Hrs 15:00 Hrs 15:30 Hrs

Moved the BD 14 buoy near to the ‘A’ frame. The Ship position for BD 14 Buoy deployment. Buoy on Water. Lat : 06°34.95 N Long: 088°16.84 E Completed the Induction cable deployment. Completed the Nylon rope deployment. Completed the PP rope deployment. Anchor dropped. Lat : 06°34.75 N Long: 088°19.16 E Started the Ship CTD castle. Completed the Ship CTD castle. Confirmed deployed BD 14 buoy data and vessel started to next location BD 12.

02 – March – 2018

09:00 Hrs 10:00 Hrs 10:30 Hrs 11:00 Hrs 12:00 Hrs 16:00 Hrs 16:45 Hrs 17:30 Hrs

BD 12 buoy was shifted to aft and started the assembly work. Cable was routed through upper mast and sensor arm. ADCP cable was routed through the flexible hose. Hood was fixed to the hull. DVS and 0.45 m CT sensor was fixed on the PVC frame. Glass floats were fixed on the 7.5 m chain Anti vandal flange, radar reflector and becon lamp was fixed on the sensor arm. Mooring hardware was fixed up to ADCP frame.

03 – March – 2018

09:00 Hrs 10:00 Hrs 10:30 Hrs 11:00 Hrs 15:25 Hrs 16:25 Hrs 17:30 Hrs

ADCP was fixed on the frame. Solar panel was opened and routed the cable. CT sensor 1 m was fixed on the keel frame. Induction cable was marked for CT sensor mounting. Retrieved BD 14 was shifted to balloon deck. Shifted the ropes from balloon deck to aft deck. New anode was fixed on the acoustic release.

04 – March – 2018

09:15 Hrs 09:30 Hrs 09:35 Hrs 09:37 Hrs

Ship was reached to BD 12 location and sighted the buoy. Vessel in DP and position for release the BD 14 buoy. Dunker Lowered for release Command. Release Command executed.

7

09:45 Hrs 09:50 Hrs 10:10 Hrs 10:20 Hrs 10:45 Hrs 11:30 Hrs 11:50 Hrs 12:15 Hrs 12:30 Hrs 14:30 Hrs 20:30 Hrs 23:00 Hrs

Received the Acknowledgement from acoustic release. Boat on water. Buoy retrieval started at Lat : 10°23.55 N Long: 093°56.57 E Buoy on deck. Boat on deck. Retrieved all CT sensors. Retrieved Nylon rope and Green floats. Retrieved all PP ropes. Retrieved acoustic release and Glass floats. BD12 final assembly work was done Bathymetry survey started Completed the Bathymetry survey

05 – March – 2018

07:45 Hrs 08:00 Hrs 08:15 Hrs 08:42 Hrs 09:05 Hrs 10:05 Hrs 10:15 Hrs 11:00 Hrs 12:25 Hrs 13:00 Hrs 13:15 Hrs

Moved the BD 12 buoy near to the ‘A’ frame. The Ship position for BD 12 Buoy deployment. Buoy on Water at Lat : 10°28.36 N Long: 094°02.63 E Completed the Induction cable deployment with CT sensors. Completed the Nylon rope deployment at the end attached 10 nos of plastic floats. Completed the PP rope deployment. Anchor dropped at Lat : 10°30.23 N Long: 094°02.10 E Post deployment ship CTD castle started Completed the ship CTD castle BD12 buoy watch circle and data confirmed by the shore team Ship started heading towards TB09 location

06 – March – 2018

09:00 Hrs 10:30 Hrs 15:00 Hrs 17:00 Hrs 20:00 Hrs 20:30 Hrs

BD08 buoy mechanical assembly was started Retrieved BD 14 and BD 12 Buoys shifted to balloon deck Completed the BD08 buoy assembly work Materials shifting and arrangement works Ship RO plant was problem. For the same informed by the Master Chief scientist informed to office about RO plant problem

07 – March – 2018

12:15 Hrs 12:30 Hrs 09:00 Hrs 10:00 Hrs 12:30 Hrs 16:00 Hrs 18:00

As per the direction of SCI, the ship heading towards Port Blair for repairing of RO plant. The ship heading towards Port Blair was informed to office by Chi.Sci Tsunami pipe and keel frame was cleaned and fixed the anodes Started the TB09 buoy assembly work Completed the TB09 buoy mechanical assembly work. Upper mast and sensor arm was connected and fixed the modem. Ship reached to Port Blair. The ship was drifting due to non availability of berth at port.

8

08 – March – 2018

09:00 Hrs 10:00 Hrs 11:30 Hrs 16:00 Hrs 18:30 Hrs

Cleaned the keel weight and keel frame for BD 09 buoy. Fixed the anodes on keel weight Keel weight assembly was interfaced with the main BD09 buoy system. Started ship from drifting to inside port. The ship was anchored at port inner anchorage area.

09 – March – 2018

09:00 Hrs 10:00 Hrs 11:30 Hrs 16:00 Hrs 17:00 Hrs

Started the Cleaning work of the ADCP frame. Completed the cleaning and started the painting work. Prepared the pre-deployment sheet for TB09 and sent to office. Ropes and other materials were shifted from port side to deck inner side Cleaning of CT sensors.

10 – March – 2018

09:00 Hrs 10:00 Hrs 16:00 Hrs 15:00 Hrs

Started the induction cable marking. Fixed the anodes on keel weight BPR float was attached to BPR. Deck space was cleaned

11 – March – 2018

09:00 Hrs 10:00 Hrs 11:30 Hrs 16:00 Hrs

Drilling was done on sensor arm Fixed sensors on sensor arm DVS was fixed on DVS frame. Flexible hose was cut for ADCP cable routing

12 – March – 2018

09:00 Hrs 16:00 Hrs 17:30 Hrs

Cleaned the CT sensors. Changed the bush Copper guard on CT sensors Shifting the in deck place

13 – March – 2018

09:00 Hrs 10:00 Hrs 11:30 Hrs 16:00 Hrs 17:00 Hrs

Cleaned the keel weight and keel frame for BD 08 buoy. Fixed the anodes on keel weight Keel weight assembly was interfaced with the main BD08 buoy system. Upper mast and sensor arm assembly work Cable was routed from sensor arm to buoy

9

14 – March – 2018

09:00 Hrs 11:30 Hrs 16:00 Hrs 15:30 Hrs

Final assembly work was carried out on TB09 buoy LID plate was checked and closed with fasteners Anti fouling paint were applied at the bottom of the instrument housing Radar reflector was fixed on the upper mast

15 – March – 2018

05:30 Hrs TB09 Buoy was sighted 06:15 Hrs Position the ship BPR dropped location 06:30 Hrs Dunker lowered and communicated to BPR 06:36 Hrs CPW command executed 07:10 Hrs BPR was sighted 07:15 Hrs Boat on water 07:25 Hrs Boat reached near to BPR and started the towing 07:30 Hrs BPR on deck and cleared using fresh water 07: 35 Hrs Boat reached to buoy and connected the heaving rope 07:50 Hrs Deep winch cable was connected to buoy 08:00 Hrs Buoy on deck at Lat: 17°14.18 N Long: 090°00.75 E 08:10 Hrs Boat on deck 12:40 Hrs The ship positioned near buoy deployment location 12:50 Hrs Buoy connected to Crane’s wire rope 12:55 Hrs Buoy on Water at Lat: 17°17.02 N Long: 090°00.10 E 13:25 Hrs Combination rope deployment completed 13:35 Hrs Completed the Nylon rope deployment 14:20 Hrs Completed the PP rope deployment 14:25 Hrs Anchor dropped at Lat: 17°15.68 N Long: 089°58.84 E 16 – March – 2018

05:30 Hrs Started ship CTD castle 06:30 Hrs Completed the CTD castle 07:00 Hrs Ship was reached to BD08 location and sighted the buoy 07:20 Hrs Dunker lowered for release command 07:45 Hrs Release command executed 07:50 Hrs Boat on Water 08:10 Hrs Glass Float and Green Floats was Sighted 08:30 Hrs Buoy on Deck at Lat: 17°47.200'N Long: 89°13.189'E 08:50 Hrs Boat on Deck 09:00 Hrs Started retrieval of Induction cable and CT sensors 09:45 Hrs Completed the Induction cable with CT sensors 11:00 Hrs Green Float on Deck 12:25 Hrs Glass Float and acoustic release on Deck 12:30 Hrs Started the vessel proceeding to bathymetry survey location 16:45 Hrs The Ship position for BD 08 Buoy deployment 16:55 Hrs Buoy on Water at Lat: 17°50.663 N Long: 089°14.8824 E 17:15 Hrs Completed the Induction cable deployment 17:25 Hrs Completed the Nylon rope deployment 17:55 Hrs Completed the PP rope deployment 18:00 Hrs Anchor dropped at Lat: 17°49.868 N Long: 089°13.549 E

10

17 – March – 2018

05:30 Hrs Started ship CTD castle 06:15 Hrs Completed the CTD castle 06:30 Hrs Ship was reached to BD09 location and sighted the buoy 06:50 Hrs Dunker lowered for release command 07:00 Hrs Release command was executed 07:15 Hrs Boat on Water 07:45 Hrs Buoy on Deck at Lat: 17°27.297'N Long: 89°06.207'E 08:10 Hrs Glass Float and Green Floats was Sighted 08:20 Hrs Boat on Deck 08:25 Hrs Started retrieval of Induction cable and CT sensors 08:50 Hrs Completed the Induction cable with CT sensors 09:05 Hrs Green Float on Deck 09:45 Hrs Glass Floats and acoustic release on Deck 09:55 Hrs Started the vessel proceeding to bathymetry survey location 17:00 Hrs The Ship position for BD 09 Buoy deployment 17:20 Hrs Buoy on Water at Lat: 17°29.176 N Long: 089°09.578 E 17:35 Hrs Completed the Induction cable deployment 17:50 Hrs Completed the Nylon rope deployment 18:20 Hrs Completed the PP rope deployment 18:25 Hrs Anchor dropped at Lat: 17°29.578 N Long: 089°07.741 E

18 – March – 2018

06:30 Hrs TB09 Buoy Sighted 08:00 Hrs Boat on water 09:10 Hrs BPR near TB 09 Position Lat: 17°15.89 Long: 089°59.10 09:20 Hrs BPR commands not enhanced by TB09 Surface modem 09:30 Hrs Boat on Deck 12:00 Hrs BPR commands not connect TB09 Surface modem 15:00 Hrs New BPR was deployed in aft and also tried to communicate Surface modem 15:50 Hrs New BPR also could not communicate Surface modem. 16:00 Hrs New BPR on deck 16:30Hrs Boat on water for checking the wiring connection in surface buoy 17:15 Hrs Boat on deck 17:30 Hrs Onboard team decided that surface modem SMT has some problem 18:00 Hrs started the onboard testing of another SMT with BPR

19 – March – 2018

06:00 Hrs Ship is positioned near to TB09 buoy 06:20 Hrs Boat on water 06:50 Hrs TB09 Buoy on Deck at Lat: 17°16.371 N Long: 89°58.835 E 07:30 Hrs Boat on Deck 09:00 Hrs New Surface modem (S/N:272326-004) was interfaced with surface buoy 09:30 Hrs Started the onboard testing of SMT with BPR. 11:45 Hrs Both were worked fine and planned to deploy the TB09 buoy 12:00 Hrs Boat on Water

11

12:35 Hrs TB09 Buoy on Water Lat: 17°16.245 N Long: 089°59.013 E 12:45 Hrs Boat on Deck 14:15 Hrs Ship positioned BPR drop position Lat: 17°15.896 N Long: 089°59.105 E 14:30 Hrs Started lowering the BPR 14:40 Hrs At 103 m depth the BPR communicated with surface buoy SMT 15:20 Hrs BPR released at 1340 m water depth 17:45 Hrs Shore team confirmed the BPR settled on sea bed 20 – March – 2018

16:30 Hrs 17:00 Hrs 17:30 Hrs 20:00 Hrs 22:00 Hrs

Ship is positioned near to BD10 buoy location Dunker was deployed in sea and enhanced commands for acoustic release for BD10 Due to non availability of sunlight, the ducker was taken from sea Vassal started to Bathymetry survey location Completed the bathymetry survey

21 – March – 2018

06:30 Hrs 07:00 Hrs 08:00 Hrs 10:30 Hrs 11:00 Hrs 17:00 Hrs 20:00 Hrs 21:00 Hrs

Ship is positioned near to BD10 buoy location Dunker was deployed in sea and enhanced commands for acoustic release for BD11 The acoustic release was not received signal from dunker and also not release the mooring from buoy Planned to do triangularation at anchor drop position The BD10 could not release from its mooring Contacted with OEM for problem solving The BD10 buoy could not retrieved considering various environmental conditions and started heading to next location BD13

22 – March – 2018

09:00 Hrs 11:30 Hrs 16:00 Hrs

Started the BD11 buoy assembly work All mechanical components were assembled on buoy system 02 Nos of Induction cable was marked for sensor fixing

23 – March – 2018

07:25 Hrs Position the Ship for release the BD 13 buoy 07:30 Hrs Dunker Lowered for release Command 07:45 Hrs Release Command executed 07:50 Hrs Boat on water 08:05 Hrs Buoy retrieval started at Lat : 13°59.170" N Long: 086°57.932" E 08:15 Hrs Buoy on deck 08:50 Hrs Retrieved all CT sensors 09:00 Hrs Boat on deck 09:10 Hrs Retrieved Nylon rope and Green floats 09:50 Hrs Retrieved all PP ropes 09:55 Hrs Retrieved acoustic release and Glass floats 15:40 Hrs The Ship position for BD 13 Buoy deployment 15:51 Hrs Buoy on Water at Lat : 14°03.313 N Long: 087°01.592 E 16:10 Hrs Completed the Induction cable deployment

12

16:30 Hrs Completed the Nylon rope deployment 17:05 Hrs Completed the PP rope deployment 17:10 Hrs Anchor dropped at Lat : 14°02.023 N Long: 087°00.040 E 21:00 Hrs BD13 buoy data was confirmed by the SSAMC than the vessel started heading

towards BD11 buoy locations 24 – March – 2018

09:00 Hrs 11:30 Hrs 16:00 Hrs 17:00 Hrs

CT sensors were cleaned for BD11 buoy deployment Protection guards were fixed on the CT sensors BD11 buoy lid was check ADCP was fixed on frame and routed the cable

25 – March – 2018

06:00 Hrs Position the Ship for release the BD 11 buoy 06:30 Hrs Dunker Lowered for release Command 06:40 Hrs Release Command executed and released the mooring 06:50 Hrs Boat on water 06:55 Hrs Buoy retrieval started at Lat : 13°28.252" N Long: 084°07.382" E 07:05 Hrs Buoy on deck 07:50 Hrs Boat on deck 08:50 Hrs Retrieved all CT sensors 09:10 Hrs Retrieved Nylon rope and Green floats 09:50 Hrs Retrieved all PP ropes 10:00 Hrs Retrieved acoustic release and Glass floats 16:00 Hrs The Ship position for BD 11 Buoy deployment 16:20 Hrs Buoy on Water at Lat : 13°32.609 N Long: 084°09.019 E 16:45 Hrs Completed the Induction cable deployment 17:05 Hrs Completed the Nylon rope deployment 18:05 Hrs Completed the PP rope deployment 18:10 Hrs Anchor dropped at Lat : 13°30.664 N Long: 084°10.874 E 21:00 Hrs Deployed buoy data was confirmed by shore team. 21:10 Hrs The vessel started heading towards Chennai

26 – March – 2018

09:00 Hrs BD11 buoy cleaning work was carried out 10:30 Hrs Retrieved sensors cleaning work was carried out 11:40 Hrs Ropes and frames were segregated 12:00 Hrs Rope tied on all the buoy for transportation purpose 15:00 Hrs Packed the all the met sensors, CT sensors and ADCP 17:05 Hrs All the sensors boxes keep it on the deck

27 – October – 2017

07:00 Hrs V/L reached near to Chennai port 07:20 Hrs V/l reached the Pilot boarding point 07:35 Hrs Pilot onboard 08:25 Hrs V/L berthed on the Chennai port

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Annexure - I

Mooring Layout

BD14 Buoy

BD12 Buoy

14

BD12 Buoy

15

BD08 Buoy

BD09 Buoy

BD13 Buoy

16

BD09 Buoy

BD11 Buoy

17

BD 13 Buoy

18

BD11 Buoy

19

TB09 Buoy

TB12 Buoy

20

Annexure - II

Retrieval & Deployment Photos

BD14 Buoy Retrieval

BD14 Buoy Deployment

21

BD12 Buoy Retrieval

BD12 Buoy Deployment

22

BD08 Buoy Retrieval

BD08 Buoy Deployment

23

BD09 Buoy Retrieval

BD09 Buoy Deployment

24

BD13 Buoy Retrieval

BD13 Buoy Deployment

25

BD11 Buoy Retrieval

BD11 Buoy Deployment

26

TB09 Buoy Retrieval

TB09 Buoy Deployment