Humber

East Coast

Thames

East English Channel

South Coast

South West

North West

City of Cardiff

Commissioned 1997

Length 72 m

Capacity 2,300t

Service Speed 11kn

Dredge depth 35 m

BCA Avonmouth

BCA Avonmouth

Swansea

Bristol Channel resource gradings from grab and core samples

N Bristol Deep 470

Culver 472 Western Bristol Channel fine

Western Bristol Channel coarse

Sieve size (mm) Percentage passing

20 100

14 98

10 84

5 68

2 100 59

1.18 99 100 57

0.6 97 100 98 52

0.425 85 98 87 39

0.3 60 70 24 22

0.212 13 14 4 8

0.15 4 2 3 3

0.063 2 1 2 2