| BA | - | British Admiralty |
| BAF | - | Bunker Adjustment Factor |
| BB | - | Below Bridge |
| | - | Ballast Bonus |
| | - | Bare Boat |
| | - | Break Bulk/ Breaking Bulk |
| | - | Bulbous Bow |
| BBB | - | Before Breaking Bulk |
| BBC | - | Bare Boat Charter |
| BC | - | Code of Safe Practice for Solid Bulk Cargoes |
| BCH | - | Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk |
| BCM | - | Bow to Centre of Manifold |
| BCO | - | Beneficial Cargo Owner |
| BD | - | Bar Draught |
| BDC | - | Bottom Dead Centre |
| BDI | - | Both Dates Inclusive |
| B/E | - | Break-Even |
| BENDS | - | Both Ends |
| BFI | - | Baltic Freight Index |
| BHP | - | Brake Horse Power |
| BI | - | Both Inclusive |
| BIC | - | Bureau International des Containers (International Container Bureau) |
| BIFFEX | - | Baltic International Freight Futures Index |
| BIMCO | - | The Baltic and International Maritime Council |
| BKR | - | Bulgarski Koraben Registar (Bulgarian Register of Shipping) |
| B/L | - | Bill of Lading |
| BLU | - | Code of Practice for the Safe Loading and Unloading of Bulk Carriers |
| BN | - | Booking Note |
| BOA | - | Berthing On Arrival |
| BOB | - | Bunkers On Board |
| | - | Balance On Board |
| BOD | - | Bunkers On Delivery |
| BOFFERS | - | Best Offers |
| BOL | - | Bill Of Lading |
| BOP | - | Blow-out Preventer |
| BOR | - | Bunkers On Redelivery |
| B/P | - | Bills Payable |
| B/R | - | Bills Receivable |
| BROB | - | Bunkers Remaining On Board |
| BS | - | Bunker Surcharge |
| BSC | - | British Shippers' Council |
| BSI | - | British Standards Institution |
| BST | - | British Standard Time |
| | - | British Summer Time |
| BT | - | Berth Terms |
| BV | - | Bureau Veritas |
| BW | - | Brackish Water |
| | - | Ballast Water |
| BWAD | - | Brackish Water Arrival Draught |
| BWDD | - | Brackish Water Departure Draught |
| BWT | - | Ballast Water Tank |
