- jiggered
- kentledge
- journal
- junk
- kite
- knot
- lading
- laid
- landfall
- laniard
- lanyard
- lay
- lay-up
- leap-year
- lee
- leeway
- lead
- leading light
- leeward
- libation
- lie
- light buoy
- light displacement
- light draft
- list
- loblolly man
- lobscouse
- locker
- log
- look-see
- loose
- lubber
- luff
- lug
- lugger
- lugsail
- mainsail
- mainsheet
- mainstay
- maintop
- mainmast
- make
- marline
- master
- manoeuvre
- matlo
- matlow
- mate
- matelot
- mess-room
- mitten money
- mizen
- minesweeper
- mizzen
- monitor
- moorage
- moorings
- mosquito boat
- moor
- morning watch
- mosquito-craft
- mouldy
- mustang
- navicert
- navigator
- northing
- nun-buoy
- one-decker
- open
- occulting light
- ordinate
- ordinary
- outboard
- outpoint
- overran
- overrun
- overhaul
- overmasted
- paid
- parcel
- parcelling
- parish-rigged
- pass
- paunch
- pawl
- pea-jacket
- pen
- pay
- pea-coat
- peak
- pendant
- pennant
- pile
- pilotage
- pinnace
- pilot-house
- pinch
- pipe
- pickle
- pilot