Glossary

Using reference material, this glossary has been designed to provide you with a basic explanation or definition of each of the terms provided.  This glossary will be constantly updated so please contact us, if you would like us to comment of any of the terminology used.

A B C D E F G H I J K L M N O P Q R S T U V W Y Z

H

half beam
a horizontal member running transversely only part way across the hull
half deck
deck above the main deck which does not continue for the whole length of the vessel. It is also used to describe the accommodation for apprentices in the Merchant Service right up to the 1960s
Source: Country Life Book of Nautical Terms Under Sail
half floor
a framing member which commences at or near the vessel’s centreline
half floor timber
a framing member the heel of which is fastened to the central longitudinal member and the head of which abuts the heel of the third futtock or top timber. Half its length is fastened to the floor and half to the second futtock
half frame
an assembly of half floor, futtock(s) and/or top timber which extends from roughly the centreline to the sheer
halliard
a rope or similar used to raise or lower a sail, yard or flag. Also spelt HALYARD
Source: Maritime Curators Group: Manual of Curatorship
halyard
a rope or similar used to raise or lower a sail, yard or flag. Also spelt HALLIARD
handspike
wooden spar with square section used as a lever
Source: Maritime Curators Group: Manual of Curatorship
hanging knee
a knee fitted vertically with an arm uppermost
hank
metal ring like fitting that can be opened to admit a rope for attaching the luff of a sail
harbour services vessel
craft used to maintain, supply or assist larger vessels whilst in harbour
Source: National Monuments Record: Maritime Craft Type Thesaurus
hatch coaming
the raised 'wall' round a hatch opening
Source: MDA: Waterways Object Name Thesaurus
hatch wedge
wedge knocked into a cleat to secure a tarpaulin hatch cover
Source: Maritime Curators Group: Manual of Curatorship
hatches
a small deck set in a well at the stern of an unpowered narrrow boat, the doors to the back cabin open into this well deck to allow access to the back cabin
Source: MDA: Waterways Object Name Thesaurus
hatchway
a covered opening in a deck. The cover is the HATCH. The hatch may be closed by hatchboards supported by a strongback, the backs being covered by 3 tarpaulins and secured by battens and wedges
hawse eye
tubular metal fitting in the bows of a vessel through which the anchor cable passes
Source: MDA: Waterways Object Name Thesaurus
hawse pipe
iron casting located at the bow and occasionally in the stern of a vessel with hawse holes through which the cables run
Source: Maritime Curators Group: Manual of Curatorship
hawse plate
a plate at the bows of a metal vessel which is pieces by the hawse eye to allow the anchor cable to pass through it
Source: MDA: Waterways Object Name Thesaurus
hawse timber
substantial timber at the stern pierced by the hawse eyes
Source: MDA: Waterways Object Name Thesaurus
head
the top of a sail
head rails
timberwork outside the hull at the bow to support the structure
Source: Maritime Curators Group: Manual of Curatorship
head sails
all sails set between the foremost mast and the bow or bowsprit/jibboom
Source: Maritime Curators Group: Manual of Curatorship
heads
the lavatory
Source: Country Life Book of Nautical Terms Under Sail
heaving line
a line used as a messenger in advance of hauling a heavy warp
Source: Maritime Curators Group: Manual of Curatorship
heel
the location where the keel and stern post meet
Source: Maritime Curators Group: Manual of Curatorship
herring bone planking
a hull in which the bottom planks are laid at an angle to the longitudinal centreline, sloping aft in the main but tapering and fanning at the stern (FAN STAVING)
hit-or-miss framing
irregular arranging of framing elements in discontinuous framing
hog
a longitudinal strength member fastened to the top of the keel to provide a landing for the inner edges of the garboard strakes
holland submarine
first practical submarine design. The first to use a combination of battery power and internal combustion engines
Source: National Monuments Record: Maritime Craft Type Thesaurus
hood end plank
the first or last plank in a strake, the HOOD END being the end of the strake fitting into the rabbet of the stem or stern post. Termed FORE-HOOD or AFTER-HOOD according to position
hopper barge
a vessel used to carry away mud etc from a dredging machine and discharging it elsewhere
Source: National Monuments Record: Maritime Craft Type Thesaurus
hopper dredger
a dredger which can act as its own hopper and can thus transport the mud which it picks up to dump it at the desired place
Source: National Monuments Record: Maritime Craft Type Thesaurus
horn timber
the section of timber joining the sternpost/keel to the transom or counter
Source: Maritime Curators Group: Manual of Curatorship
horse
a transverse metal rail on a sailing vessel which anchors the lower blocks of the mainsheets to the deck and along which the blocks can slide
Source: Maritime Curators Group: Manual of Curatorship
horseshoe plate
plate in the form of a horseshoe fitted under the counter around the rudder stock
Source: Country Life Book of Nautical Terms Under Sail
hospital ship
a ship used for treating patients or moving them between a battle zone and a safe area
Source: National Monuments Record: Maritime Craft Type Thesaurus
hounds
shoulders of timber or metal located at the mast head to create a foundation for the shrouds and trestle trees
Source: Maritime Curators Group: Manual of Curatorship
houseboat
a boat used as private or domestic living accomodation
Source: National Monuments Record: Maritime Craft Type Thesaurus
hulk
an old ship converted for a variety of uses for which it is not required to move under its own power
Source: National Monuments Record: Maritime Craft Type Thesaurus
hull
the entire structure of the body of a vessel
Source: Maritime Curators Group: Manual of Curatorship

thole pin:

a single pin or one of a pair rising vertically from the sheer and acting in a variety of ways to provide a fulcrum for the oar