| 0 |
| 1: Depressions and mid-position flats, shallow to moderate depth (0 - 45 m) on coarse to fine sand |
| 2: Flat depressions at shallow to moderate depth (0 - 45 m) in medium sand |
| 4: Mid-position flats in shallow water (25 - 45 m) on coarse to medium sand |
| 7: Mid-position flats and depressions in shallow water (25 - 45 m) on medium to coarse substrate |
| 25: Depressions at moderate depths (15 - 82 m) on fine to coarse sand |
| 32: Mid-position flats at shallow to moderate depths (22 - 45 m) on medium sand |
| 38: Depressions in water shallow (15 - 22 m) on medium to coarse sand |
| 44: Depressions and mid-position flats mostly very shallow (0 - 22m), but occasionally very deep on fine to coarse sand |
| 64: Depressions and mid-position flats in shallow water (15 and 22 m) on medium sand |
| 84: All types of flats at moderate depth (22 - 82 m) on fine to medium sand |
| 87: Depressions and high flats in shallow water (15 - 22 m) on medium sand |
| 216: High slopes in deep water (95 - 592 m) on medium to fine sand |
| 218: Depressions at moderate depths (45 - 82 m) on medium to coarse sand |
| 219: High flats at moderate depths (45 - 82 m) on coarse to fine sand |
| 229: High flats and depressions at shallow to deep depths (22- 592 m) on a fine to medium sand |
| 301: Any seabed form at moderate to deep depths (45 -592) on any substrate |
| 306: All types of flats at medium depth (45 - 82 m) on medium sand |
| 384: High slopes and canyons in deep water (95 - 592 m) on any substrate |
| 395: Depressions and high flats at moderate depths (45 - 82 m) on fine to medium sand |
| 505: Slopes and canyons in very deep water (>592 m) on silt and mud |
| 520: Mid position flats and depressions at moderate depths (45 - 82) on mostly coarse to occsasionaly fine sand |
| 592: Mid-position flats at moderate depth (45 - 82 m) on medium sand |
| 768: Depressions in very shallow water (0 - 15 m) on silt to fine sand |
| 1223: High flats in moderately deep water (82 - 95 m) on medium sand |
| 0 |
| 1: Variable settings in a wide range of depths on fine to coarse sand |
| 3: Flats and slopes at moderate to very deep depths (average 128 m, min 44 m) on fine to very fine sand |
|
| 6: High slopes and flats at moderate to deep depths (44 - 139 m) on coarse to fine sand |
|
| 11: High slopes, canyons, flats in deep water (60 – 485 m) on medium to fine sand |
| 24 |
| 25: Flats and side slopes in very shallow to shallow water (0 - 23 m) on fine to coarse sand |
| 36: Depressions and high flats in very shallow to moderate depths (0 – 75 m) on medium to coarse sand |
| 66: High flats and slopes in moderately deep water (75 - 139 m) on very fine to fine sand |
| 82: All types of flats in moderately deep water (44 – 139 m) on medium to coarse sand |
| 109: Depressions in very shallow water (0 - 23 m) mostly on medium to coarse sand but occasionally on silt |
| 113: Depressions and mid-position flats at moderate depths (23 - 44 m) on very fine sand |
| 200: Depressions at very shallow to moderate depths (0 – 44 m) on very fine to medium sand |
| 223: Mid-position flats and depressions at moderate depths (44 - 75 m) on fine to medium sand |
| 230: Depressions in shallow depths (23 - 44 m) on very fine sand |
|
| 316: Flats in shallow water (8-44 m) on very fine to medium sand |
|
| 317: Mid-position flats at moderate depths (31 - 75 m) on fine to medium sand |
|
| 372: Depressions and low slopes at moderate depths (44 – 75 m) on very fine sand |
|
| 381: Mid and high position flats in moderate depths (44 - 79 m) on fine to very fine sand |
|
| 387: High slopes and flats in very deep water (>139 m) on fine sand |
|
| 390: Depressions in shallow water (23 - 44 m) in very fine to fine sand |
|
| 437: High flats and slopes in deep to very deep water (75 - 200 m) on fine sand |
|
| 873: Flats and side slopes in shallow water (8 - 31 m) on very fine to medium sand |
| 949: Mid and low flats in deep water (75-139 m) on medium to fine sand |
| 2537: Depressions and high flats in shallow water (23 - 31 m) on very fine to fine sand |