- aback
- abaft
- abeam
- adrift
- affreightment
- afore
- after
- aftermost
- ahoy
- ahull
- alee
- aloft
- alongside
- aloof
- alow
- amidships
- anchor
- apeak
- aport
- apprentice
- artificer
- astern
- average adjustment
- aviso
- avast
- backstay
- bag
- banderol
- banderole
- banian day
- battleship
- beacon
- barratry
- bear
- beat
- becalm
- belaid
- barrator
- beam
- bearing
- belay
- bell-bouy
- bend
- berth
- bill
- billyboy
- binnacle
- biscuit-throw
- blanket
- bitter end
- bitts
- bloke
- boarding
- boarding-ship
- boatswain
- boom
- borne
- bottom
- bottomry
- bower
- bower-anchor
- bowman
- bowsprit
- blue peter
- blue ribbon
- board
- bollard
- brail
- brass rags
- breach
- bream
- brig
- breaker
- brewing
- brought
- bring
- brow
- bucko
- buffer
- buoyage
- burgee
- burgoo
- burthen
- broach
- broadside
- brace
- break
- bridge
- bridle
- bulge
- bulk
- bulkhead
- bum-boat
- burden
- bulwark
- bunker
- bunt
- buoy
- butane taker
- cable