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A

A-hull

A-lee

Aback

Abaft

Abaft the beam

Abandon Ship

Abeam

Abel Brown

Aboard

About

Above board

Above-water hull

Abreast

Absentee pennant

Accommodation

Accommodation ladder

Act of Pardon / Act of Grace

Admiral

Admiralty

Admiralty law

Adrift

Advance note

Afloat

Aft

Afternoon watch

Aground

Ahead

Ahoy

Ahull

Aid to Navigation

All hands

All night in

Aloft

Alongside

Amidships

Amidships (or midships)

Ammeter

Anchor

Anchor ball

Anchor buoy

Anchor chain or cable

Anchor detail

Anchor light

Anchor rode

Anchor watch

Anchor’s aweigh

Anchorage

Andrew

Anemometer

Anode

Anti-fouling

Apparent wind

Apron

Arc of Visibility

Armament

Armature

Articles of War

As the crow flies

Ashore

Aspect ratio

Astern

ASW

Asylum Harbour

Athwart

Athwart-ships

Athwart, athwartships

Auxiliary engine

Avast

Awash

Aweigh

Aye, aye

Azimuth circle

Azimuth compass

B

Back

Back and fill

Backstays

Backwinding

Baffle plate

Baggywrinkle

Balanced rudder

Ballast

Bank (sea floor)

Banyan

Bar

Bar pilot

Barber hauler

Bare-poles

Barnacle

Barometer

Barrelman

Batten

Beacon

Beam

Beam ends

Bear

Bear down

Bearing

Beating

Beaufort Scale

Becalm

Becket

Bedding compound

Before the mast

Before the wind

Belay

Belaying pins

Below

Bend

Bermudan or Bermudian rig

Bermudan rig

Berth

Best bower (anchor)

Between decks

Between the Devil and the deep blue sea

Bight

Bilge

Bilge blower

Bilge keel

Bilged on her anchor

Bill

Bimini

Bimmy

Binnacle

Binnacle list

Bitt, plural Bitts

Bitter end

Bitter, or bitter-end

Bitts

Blade

Blanket

Block

Bloody

Blue Peter

Bluff

Board

Boat

Boat hook

Boatswain or bosun

Bobstay

Bobstays

Bollard

Bolt-rope

Bombay runner

Bonded Jacky

Bonding conductor

Booby

Booby hatch

Boom

Boom crutch

Boom vang (vang)

Booms

Boot top

Bosun’s chair

Bottomry

Bound

Bow

Bow and buttock lines

Bow line

Bow wave

Bow-chaser, chase or chase-piece

Bowline

Bowse

Bowsprit

Box

Box the Compass

Boy seaman

Brace

Brail

Brake

Brake horsepower (bhp)

Brass monkeys or brass monkey weather

Break out

Breaker points

Breast-hooks

Bridge

Bridle

Bring to

Broach

Broaching-to

Broad reach

Brushes

Buffer

Bulkhead

Bull of Barney

Bulwark

Bulwarks

Bumboat

Bumpkin

Bumpkin/Boomkin

Bunk

Bunt

Bunting Tosser

Buntline

Buoy

Buoyed Up

Burdened vessel

Burgee

Butt

Buttock

By

By and Large

By the board

By the lee

By-pass

C

Cabin

Cabin boy

Cable

Cam shaft

Camber (or draught)

Canister

Cap shroud

Cape Horn fever

Capsize

Capstan

Captain’s daughter

Cardinal

Cardinal points

Careen

Careening

Carlings

Carry-away

Carvel

Cast

Cat

Cat boat

Cat Head

Cat o’ nine tails

Cat’s paw

Catalyst

Catamaran

Catboat

Cathode

Caulk

Cavitation

Ceiling

Cell

Centre of effort

Centre of gravity

Centre of lateral resistance

Centreboard

Chafe

Chafing

Chafing Gear

Chain plates

Chain shot

Chain-wale or channel

Chamfer

Chart

Chase guns

Check

Cheeks

Chine

Chine log

Chock-a-block

Chocks

Civil Red Ensign

Clamps

Clawing off

Clean bill of health

Clean slate

Clear

Cleat

Clench

Clew

Clew-lines

Clew-outhaul

Clinker

Close-hauled

Close-reefed

Clove-hitch

Club hauling

Coach roof

Coaming

Coat

Cockpit

Code signals

Coil

Cold plug

Common ground point

Commutator

Companion

Companionway

Compass

Condenser

Conning

Cooling water

Corrector

Corrosion

Counter

Couple

Course

Covering boards

Coxswain or cockswain

Crab

Cradle

Craft

Crance/Crans/Cranze iron

Crazing

Cringle

Cro’jack or crossjack

Crosstree

Crow’s nest

Crutch

Cuddy

Cunningham

Cunningham eye

Curtain

Cut and run

Cut of his jib

Cut-water

Cutter

D

Dagger board

Daggerboard

Davits

Davy Jones’ Locker

Day-sailer

Daybeacon

Dayboard

Dead reckoning

Dead-wood

Deadeye

Deadrise

Deadwood

Deck

Deck supervisor

Deckhead

Decks

Deep six

Departure

Derrick

Deviation

Devil seam

Devil to pay (or Devil to pay, and no pitch hot)

Diagonals

Diamond

Diesel engine

Dinghy

Directional light

Displacement

Displacement hull

Disrate

Distributor

Dock or slip

Docking light

Dog watch

Dog-watches

Doghouse

Dolphin

Dorade ventilator

Double block

Double ender

Double the angle on the bow

Douse

Downhaul

Downwind

Draft

Draught

Draw

Dressing down

Drifter

Drip collector

Drive

Driver

Driver-mast

Dry exhaust

Dry rot

Duck

Dunnage

E

Earing

Earrings

Ebb

Eddy

Electrolysis

Embayed

End plate effect

Engine room

Ensign

Entrance

Epoxy resin

Equinox

Even-keel

Exhaust manifold

Extremis

Eye of a vessel

Eye splice

F

Fag

Fair

Fairlead

Fake

Fall

False keel

Fathom

Feather

Fend off

Fender

Fender board

Fetch

Fid

Fiddle-block

Fife-rail

Figurehead

Filler

Filter

Fireship

First Lieutenant

First Mate

First rate

Fish

Fitting out

Fix

Flag hoist

Flame arrestor

Flare

Flash point

Flatback

Flood

Floor

Floor timbers

Floors

Flotsam

Fluke

Flukes

Flush

Flush deck

Flushing plug

Fly by night

Flying bridge

Following sea

Foot

Footing

Footloose

Footrope

Fore

Fore-and-aft

Fore-and-aft rig

Forecastle

Forefoot

Foremast jack

Forestays

Forward

Foul

Founder

Frame

Frap

Free

Freeboard

Freshen

Full and by

Furl

Futtocks

G

Gaff

Gaff rigged

Galley

Gammon iron

Gangplank

Gangway

Garbled

Garboard

Garboard planks

Garboard-strake

Gaskets

Gear

Gear case

Gel coat

Gel time

Genoa

Ghost

Ghosting

Gimbals

Glass fibre

Global Positioning System

Go about

Gooseneck

Grab rails

Granny knot

Grapeshot

Grapnel

Grating

Grave

Gripe

Grog

Groggy

Grommet

Ground

Ground tackle

Gudgeons

Gunner’s daughter

Gunter rig

Gunwale

Guy

Gybe

H

Hail

Halyard or Halliard

Halyards

Hammock

Hand

Hand Bomber

Hand over fist

Handsomely

Handy billy

Hank

Hanks

Harbor

Hard chine

Hard over

Harden

Hatch

Hatchway, hatch

Haul wind

Hauling part

Hawse pipe

Hawse-hole

Hawsepiper

Head

Head board

Head of navigation

Head sails

Head-to-wind

Headsail

Heat exchanger

Heave

Heave down

Heave short

Heave to

Heaving to

Heavy weather

Heel

Heeling

Helm

Helmsman

Highfield lever

Hitch

Hog

Hogged

Hogging

Hold

Holiday

Holystone

Home

Horn

Horn timber

Horse

Horse (or hawse)

Hot plug

Hounds

Hull

Hull speed

Hydrofoil

Hydroplane

I

Icing

Idlers

In irons

In stays

In stops

In the offing

In-water Survey

Inboard

Inboard-outboard

Inboard-Outboard drive system

Inclinometer

Inglefield clip

Intake manifold

J

Jack

Jack Tar

Jacklines or Jack Stays

Jaws

Jet

Jetsam

Jib

Jibboom

Jibe

Jigger-mast

Joggle

Jollies

Jumper struts

Junk

Jury-mast

K

Kedge

Keel

Keelhauling

Keelson

Kelson

Ketch

Kicker

Kicking strap

Killick

King plank

Kink

Knee

Knees

Knock

Knot

Know the ropes

L

L.O.A.

L.W.L.

Lacing

Ladder

Laker

Laminate

Land lubber

Land-fall

Lanyard

Larboard

Large

Lateral System

Latitude

Lay

Lay down

Lazarette

Leading edge

League

Ledges

Lee

Lee helm

Lee shore

Lee side

Leech

Leeward

Leeway

Let go and haul

Letter of marque and reprisal

Lifeboat

Lifelines

Lift

Limbers, or limber holes

Line

Line squall

Liner

Linkage

List

Loaded to the gunwales

Locker

Log

Log-book

Loggerhead

Longitude

Loom

Loose cannon

Loose footed

Loose-footed

Lower unit

Lubber line

Lubber’s line

Luff

Luff up

Luffing

Lying ahull

M

Magneto

Main

Main saloon

Main sheet

Mainbrace

Mainmast (or Main)

Mainsheet

Mainsheet horse

Make

Mallet

Man of war

Man overboard!

Marconi rig

Marina

Marine borers

Marines Soldiers afloat

Marl

Marlin spike

Marline

Marry

Mast

Mast butt

Mast head

Mast partners

Master

Master-at-Arms

Masthead

Masthead rig

Matelot

Mess

Mess deck catering

Messenger

Midshipman

Midships

Mile

Miss-stays

Mizzen

Mizzen staysail

Mizzenmast (or Mizzen)

Monkey fist

Moor

Mooring

Motor sailer

Motor well

Mould

Moulds

Mouse

N

Navigation

Navigation lights

Navigation rules

Neap tides

Nip

Nipper

No room to swing a cat

O

Oakum

Oar

Off the wind

Offing

Oilskin

On the wind

Oreboat

Orlop deck

Out-haul

Outhaul

Outward bound

Over the barrel

Overbear

Overfall

Overhang

Overhaul

Overhead

Overreach

Overwhelmed

Owner

Ox-Eye

P

Painter

Palm

Parachute flare

Parachute spinnaker

Parallel rules

Parbuckle

Parcel

Parrel

Part

Part brass rags

Partners

Passage

Pay

Pay-off

Paymaster

Peak

Pennant

Pier-head jump

Pilot

Pin

Pinch

Pintle

Pipe (Bos’n’s), or a Bos’n’s Call

Pipe berth

Pipe down

Piping the side

Pitch

Pitch-pole

Pitchpole

Plane

Plot

Plug spanner

Pointing

Polyethylene

Pontoon

Poop deck

Pooped

Port

Port hole

Port tack

Porthole

Position line

Pound

Press gang

Preventer

Preventer (Gybe preventer, Jibe preventer)

Principal Warfare Officer

Privateer

Privileged vessel

Prop rider

Propeller shaft

Propeller walk or prop walk

Prow

Puddening

Pulpit

Purchase

Push pit

Push rod

Pusser

Q

Quarter

Quarter berth

Quarterdeck

Quartering sea

Quayside

Queen’s (King’s) Regulations

R

Rabbet

Rabbett/Rebate

Race

Rack

Radar

Radar reflector

Radio direction finder (RDF)

Rafting

Rail

Raised deck

Rake

Range lights

Ratlines

Reach

Reaching spinnaker

Ready about

Reciprocal bearing

Rectifier

Red Duster

Reduced cat

Reed valves

Reef

Reef points

Reef-bands

Reef-tackles

Reeve

Regatta

Relieving tackle

Render

Rhumb line

Rib

Ribs

Ride at anchor

Rig

Rigger

Rigging

Righting couple

Righting moment

Rigol

Roach

Rocker

Rode

Roll

Roller reefing gear

Rolling-tackle

Rooster rail

Rope

Rope yarn

Rope’s end

Round bilge

Round turn

Round up

Rub rail

Rubbing strake

Rudder

Rules of the road

Rummage sale

Run

Runabout

Running backstay

Running fix

Running lights

Running rigging

S

Sag

Sagging

Sail-plan

Saloon

Saltie

Sampson post

Scandalize

Scantling

Scarf

Schooner

Scow

Scraper

Scud

Scudding

Scull

Scupper

Scuppers

Scuttle

Scuttlebutt

Sea

Sea anchor

Sea chest

Sea kindly

Sea room

Seacock

Seam

Seaman

Seaworthy

Seize

Self-bailing

Self-steering

Self-Unloader

Sennet whip

Serve

Set

Set flying

Sextant

Shackle

Shaft horsepower

Shaft log

Shakes

Shank

Shears

Sheathing

Sheave

Sheep-shank

Sheer

Sheer strake

Sheet

Sheet anchor

Shell

Shift

Shims

Ship

Ship’s bell

Ship’s company

Shoal

Shoe

Shore

Short board

Shorten

Shrouds

Shy

Sick bay

Side lights

Silencer

Sills

Single-handed

Siren

Skeg

Skin friction

Skipper

Skysail

Skyscraper

Slack

Slack water

Slalom

Slip

Sloop

Slop chest

Slot

Slush

Slush fund

Small bower (anchor)

Snatch block

Snow

Snub

Sole

Son of a gun

Sonar

Spanish windlass

Spanker

Spanker-mast

Spar

Spars

Speed curve

Spindrift

Spinnaker

Spinnaker pole

Spitfire jib

Splice

Spray rails

Spreader

Squall

Square meal

Squared away

Squat effect

Stall

Stanchion

Standing

Standing rigging

Starboard

Start

Starter

Starting solenoid

Stay

Staysail

Steerage way

Steering oar or steering board

Stem

Step

Stern

Stern tube

Stern-board

Stern-post

Sternway

Stiff

Stonnacky

Stop valve

Stops

Stow

Strake

Stray-current corrosion

Stringer

Strip

Strum box

Strut

Strut bearing

Studding-sails (pronounced ‘stunsail’)

Supercharger

Surge

Sway

Swell

Swigging

Swinging straps

Swinging the compass

Swinging the lamp

Swinging the lead

T

Tabernacle

Tabling

Tachometer

Tack

Tackle

Taffrail

Tail

Tail off

Tailshaft

Taken aback

Taking the wind out of his sails

Tally

Tang

Teazer

Tender

Tenon

the Ropes’

Thermostat

Thimble

Thole

Three sheets to the wind

Through-hull connection

Thrust bearing

Thwarts

Tide rode

Tie down

Tiller

Timber

Timoneer

Tingle

Toe rail

Toe the line or Toe the mark

Toe-rail

Togey

Toggle

Topgallant

Topmast

Topping lift

Topsail

Topsides

Torque

Torque wrench

Touch and go

Tow

Towing

Traffic Separation Scheme

Transom

Transom cutout

Transom knees

Trapeze

Travellers

Triatic stay

Trice

Trick

Trim

Trip

Trough

Trunk cabin

Trysail

Tuft

Tumblehome

Turn

Turtling

Twin screw

U

Una rig

Unbend

Under the weather

Under way

Underwater hull or underwater ship

Unreeve

Unship

Upper berth

Upper-yardmen

Upwind

V

V-bottom

V-hull

Vang

Vanishing angle

Variation

Varnish

Vector diagram

Veer

Ventilation

W

Wake

Wales

Warp

Watch

Watercraft

Waterlines

Watertight

Waterway

Way

Weather

Weather deck

Weather gage

Weather side

Weatherly

Wedges

Weigh

Weigh anchor

Well found

Wells

Wet exhaust

Wetted surface

Wheel

Wheelhouse

Whip

Whisker-pole

Whiskers

White Horses

Wide berth

Winch

Wind-rode

Windage

Windbound

Windlass

Windward

Wing-and-wing

Work

Y

Yacht

Yankee jib

Yard

Yardarm

Yarr

Yaw

Yawl