Basic Seamanship: Week 3

Front 1

Dangerous semicircle

Back 1

the half of a cyclonic storm where the rotary and forward motion reinforce each other

Front 2

day man

Back 2

A non watchstander. works during day hours

Front 3

deadlight

Back 3

A heavy round glass lens set permanently into a wooden deck or bulkhead to permit light.

Front 4

dead reckoning

Back 4

navigation by using courses and speed without reference to sights or bearings

Front 5

deadrise

Back 5

the vertical distance between the keel and the turn of the bilge

Front 6

deadweight tonnage

Back 6

actual carrying capacity of a vessel in long tons, equal to the difference between light displacement and full load displacement tonnage

Front 7

deeps

Back 7

the fathoms on a leadline which are not marked

Front 8

demurrage

Back 8

the port fee charged when a ship is delayed while loading or discharging cargo

Front 9

deviation

Back 9

The angular difference between compass north and magnetic north

Front 10

devil's claw

Back 10

a strong iron hook used as the stopper for an anchor chain

Front 11

displacement tonnage

Back 11

the actual weight of an entire vessel and everything aboard her in long tons

Front 12

docking plan

Back 12

the plan a ship furnishes to a shipyard before drydocking

Front 13

dodger

Back 13

a canvass windscreen

Front 14

dog

Back 14

a mechanical device for securing a watertight door

Front 15

doldrums

Back 15

the belt on either side of the equator in which there is normally little or no wind

Front 16

dolphin

Back 16

a piling or cluster of pilings for mooring

Front 17

doppler log

Back 17

an electronic instrument which measures speed over the bottom

Front 18

double bottom

Back 18

watertight tanks between the skin of the ship and cargo tanks or other spaces

Front 19

double up

Back 19

to double a vessels mooring lines

Front 20

downhaul

Back 20

a rope or tackles used to haul down a sail

Front 21

draft

Back 21

the distance from the waterline to a vessels keel

Front 22

drag

Back 22

the excess of draft aft over forward

Front 23

drift

Back 23

1. the speed of the current
2. the movements of the a ship by action of the wind or currents without control

Front 24

dunnage

Back 24

material used for bracing or stowing cargo to prevent movement

Front 25

end-on

Back 25

Ships in a head-to-head meeting are said to be end-on

Front 26

engine order telegraph

Back 26

an instrument that relays speed changes from the bridge to the engine room

Front 27

fairlead

Back 27

fittings or blocks used to preserve the direction of lines or wire so the pull can be delivered to a gypsy or deck fittings with minimum friction

Front 28

fake

Back 28

to lay a rope down in long bights side by side so it will be clear for running

Front 29

fall

Back 29

the entire length of a rope used in a tackle

Front 30

fid

Back 30

a pointed piece of hardwood used in splicing . really a wooden marlinspike

Front 31

fish hooks

Back 31

broken strands of wire which occur in wire rope

Front 32

flare

Back 32

1. the outward and upward curve in the form of the bow

2. signal light which flares or rises up

Front 33

flemish down

Back 33

to coil a rope neatly on the deck in concentric circles

Front 34

flotsam

Back 34

floating wreckage or other objects

Front 35

flukes

Back 35

the extreme ends of the anchor arm which dig into the bottom

Front 36

footboard

Back 36

the athwartship frames used as a brace for oarsman

Front 37

founder

Back 37

to sink

Front 38

frap

Back 38

to pass ropes around boat falls to prevent swinging

Front 39

freeboard

Back 39

the distance from the waterline to the maine deck or gunwale

Front 40

furl

Back 40

to fold or roll up an awning or a sail