Nicolson, David

English

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NATION#.ADVISORY (X?MMITTEEFOR AERONAUTICS.,..-. .-
GLOSSARY OF TERMS USED IN FLYING BOAT HULL CONSTRUCTION.
By
Captain David Nicolson.
The
Taken from
Aeronautical Journ&, August, 1921.
.
https://ntrs.nasa.gov/search.jsp?R=19930080758 2020-03-17T05:06:08+00:00Z
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31176014399985
GLOSSARY OF TERMS USED IN FLYING BOAT HULL CONSTRUCTION.*
Afterbody.
Alleyway.
Amidships.
Apron.
Athwart.
Base Line.
Beam.
Beam and Length.
Bilge.
Bilge Keelsons.
Bilge Strakes.
Bilge Water.
Blisters.
Boat Chocks.
Body.
By
Captain David Nicolson.
The part of a boat abaft the midship section.
Fore and aft passage under deck, or hood.
The center fore and aft line of a boat.
A piece of timber fitted to aft side of stem to
form backing for ~lsnk ends.
Transversely, at right angles to foxe and tit.
In N.A. a level line near the keel, from which
all heights are measured perpendicular to it,
sometimes called datum line.
The transverse member to support the deck, and
tie sides. The breadth of a boat.
The proportion of a boat’s beam bears to her
length varies according to her type.
The round in a boat’s timbers or frames where
they begin to approach a vertical direction.
Stout pieces of timber or metal.sections fitted
inside a boat in a fore and aft direction along
the bilge to strengthen her longitudindly.
Planks or plates worked longitudinally forming
outer skin along the bilge, or over the heads
and heels of thewf~aes.
The water inside a boat, which lies in the bottom.
Unsightly bladders on paint are generally caused
by putting new paint upon the top of old, or
using very thick paint.
Woodmembers cut to shape of thwartship section
. of boat where fitted. ‘
Part of a boat’s hull, as fore-body, middle–body
and after-bodv.
.
* Taken from the Aeronautical Journal, August, 1921.
—Body Plan.
BottOZD
Box Scarf.
Bulkheads.
Bulwark.
Butt.
Buttock Lines.
Boot Top.
Battens.
Bollard.
Breasthook.
Buttstrfps.
Csmbered.
Cant frames.
Ca,rvelBuilt.
@iqe.’.. ..”..,
-2-
The pl@A. Which contxn~ the cToss sections ‘f
a boat’s lines.
.,.=. ........,
Usually understood as the part of a boat?below
the water line.
A method of joining two pieces of timber by let-
ting each into the other one-half its own
tlnickness.
The athwartship partitions which separate a boat
into compartments, etc. Fore and aft parti-
tions are also termed bulkheads.
The side of a boat above the deck=
The joining or meeting of two pieces of wood end-
ways. Butt and butt means that two planks
meet end to end, but da not overlsp.
Planes in a fore and aft direction, showing the
outline of vertical fore and aft sections.
The portion of the surface coated with anti-
fouling composition above the water level.
Temporary fore and aft members =-d which *N
timbers are bent.
A vertic~ pOst, or fitting fomning Postss in
wood or metzilfor making fsst cable, etc.
Waen-’the keel, deck, or fin tOP has its ends 10wez
er than its’center. ..’.
:.
The fr,anesin”the bow &n~ ,q?iarterOf”a boat”that
are not square to the keel.
-.. .. . .
Members f’~ttedin w=” of deck openings, i.e.,
: h~fb~~s.. ; ., -- ~ .,’.. ‘.
...
...
.
Btiilt’with”%heplakfl~sh @ge to.:dge” ‘“”
Where the top.sides~meet the b.ot,tornat.ag angle.
.. ...
,.-... ... . ... ... .. .,
.. . ..
I ~..,-._,!
..— .
clamps or’C&impsl
~o Clench.
Cockpit.
Copper Fastened.
Caulking.
Ceiling.
comings .
Chain Girth.
Chain Plates.
Collars W. T.
Composite.
lr~.II
De.@ Wood.
12ecik.
Doubler.
Dowel.
12ump.
“t!J -
A type of wedge vice, used in boat building to
hold the planks togethex. Various contriv-
ances of wood or metal used in fitting up a
boat or in ffing parts in her construction.
To beat the end of a rivet until it forms a head,
or to turn the end of a nail in so that it
will not draw.
A form of well in the deck-
Fastened with copper nails or rooves and nails.
Driving cotton.or other stopping into the seams,
or in metal.,clenching Over edges to make
watertight.
The inside lining.
A raised frame fitted t0 and above the deck for
hatches, or other openings.
The shortest distance measured round the hull
from gunwale to gunwale.
A metsl fitting rigidly attaohed to the hull to
take shrouds.
Meta,l.= wood, or other fitting round stri~ers.
etc~, where they pase thr&gh bulkheads-or -
decks to make sazneW.T..
The form of hull in which metal end wocd con-
struction are jointly used.
The capital letter ‘iDnis used by naval archi-
tects to denote the displacement Or total
weight of the boat and her equipment, gener-
ally expressed in pounds or tons.
The solid wood worked on top of the keel for-
ward and aft.
The platforms supported on the beams.
To put one thickness of plank or plate over the
other.
A hard wood or metal pin used for connec%~~ ttm–
ber on the edges of planks.
A nail used in fastening plank to the timbers,
as distinguished from a thrcugh bolt.
I --
j?=’
“4-
I)rUht or Draft. The distsnce bel$weenthe lowest portion of the
Diagonal Ties.
Entrance.. .
Fairing.
Fairleads.
False Keel.
Fastenings.
J?ay=+0
Feather Edge.
Fender.
m Ctors .
Flush Deck.
Fore body.
Frames.
Freeboard.
Flaxe.
boat md the L. W. L.
Strengthening members, which are fitted at an
angle to the stringers or besms.
The fore part of a boat, the bow. ‘A good entrance
into the water means a long well fomned bow.
A process by which the inter-sections of ourved
lines with other lines in the bo~y plan, half
breaith plan, and sheer plan are made,to cor-
respond.
Holes in plank fittings OZ metal for ropes or
wires to lead through, so that they run fairly
and are not nipped or formed into a bight.
A piece of timber or metal fitted under the main
keel to deepen it.
The bolts, nails, etc., by which the framing and
pknking are held together.
To join pieces of timber together very closely.
Pl@ is said to fs,ythe timbers when it fits
closely to it.
When apbnk or timber tapers to a very thin
A
edge, “Tapering to nothing.m
buffer made of rope, wood, matting, cork, or
other matezial to h-&ngover the s~~e of boat
when she is about to come into contact with
another boat or object.
Transverse members connecting the heels of frames
to bottom and keel.
When the deck has no raised or sunken part.
?he fOre part of a boat which is forward of t~
midship .seotion.
The trasverse members to which the skin is fas-
tened.
The distance from W.L. to gunwale.
When the breadth at”the gunwale exceeds the
bresdth at L.W.L.
—
—
‘E-’
-5.
Finet.
Filling.
.,, I?lat-l?looreci:
Fore Foot.
Foot Rails.
Floor Boards
Floor Peak.
Futtocks.
Garboard,
Grummet.
Gussets.
Gunwale.
Gratings.
Gripe.
Gudgeons.
.
A packing or distance piece.
A stopping for seams, etc.
When the timbers =d floors project from keel in
a mare or less horizontal direotion.
The foremost part of the keel at its inter-
section with the stem.
Fore snd afters of hard wood or metsl fitted to
deok to give foothold. -
A light decking inside the hull,
A compartment next the stem.
The timbers which abut above the floors.
The strske of plank, or plates, next above the
keel into whioh it is rabbeted and bolte% or .
riveted.
A ring formed of a single strand of rope laid
over three times.
A connecting piece.
The fore and after at the etireme breadth under
deck.
(@en wood work on bottom for decking.
The fore part of the dead wood.
Metal eyebolts fitted to the stern
ceive the pintles of the rudder.
post to re-
Esilf-BreadthPlan.A drawiw showing the horizontal sections Or
water ~ines of-a boat by halves.
Hanging Knee. Knees that help to keep the beams and frame to-
gether, one arm is fastened to the under side
of a beam, the other to the frame.
Harpings. “Piecesof timber or battens that are fitted
around the frames in an unbroken line to keep
the frames in their places before the planks
or plates are put on.
Ill
. .
-6-
Hatches or Ha~C~- ‘ ,, ,
ways. @enings in the deck. ,“
..’,
Hatchway .COSPI-.
-. ing6. .... ,.
Hee.2.
Iic)gg;d.
Ihgg Piece:
.:
Eil.llli
Half Beams,
Hawsepipe..
Hold.
Hollow Lines.
Intercostal.
~The,raised fr~e.&bove ~&5.deck upon which the
hatches or hatch covers regti ~ .
The lower aft end of anything as heel of the
fraqle~
The for’mof ~ boat when She h&s cowbered sheex.
,,,
‘~ piede of t~bei”$ofked u~on top of keel to p~e-
.\ v$mt its hogging or rising in the middle.
The boat as distinct from,her superstyuczture.
Beams that are cut to take openings.
A pipe fitted through the top sides to fo~ a
fairlead for mooring rope.
Space fOr stowing cargo.
The horizontal lines that have deflections.
Fore and afters fitted against the stem which are
cut at the floors. —
notch’or notches forming a box scarf to enableJoggle. A
twO pieces of wood, etcj, to fit together.
In metal boats where the one plate, or metal,
overlaps the other, giving an inside fair
“surface.
Keel. The fore”a.nd
frames and
.’ a diagona2
aft members in a boat to which-the
garboard strake are fastened, or if
planked boat, Where theplanks.end.
Keelson:, .,,An inside keez fitted over the.throats...of”the
floors*
.
Knees. Pieces of t“imberor i~on shaped to strengthen
particular parts of.a boat. A hanging knee is-..
the one fitted under the beams; a lodging knee
. ,,,
-is a knee’fitted horizontal to theb~ams,~d
sh+f,,9r-~deOkbeams. Floor knees are V-shaped
‘like breast hooks. .. :
King Plank. Center plank of deck.
..
-7-
Lines.
,,,.,.,
Load Water Line.
Lap-
Locker.
Limber.
Moulded.
Uoulded Bre@th.
Moulds.
Manhole.
Mould Loft.
Midships.
Ma Step.
Mortise.
overhang.
Overheads.
Parcel.
PintZes.
Planking.
A ‘genezwd.tem applied to the drawing or desire
of a boat as depicted by fore and aft lines-.
““”’’~’dcross sections: A boat is said to have
~fine lines” when she has a low block coeffi-
cient.
The line of flotaticm when a boat is properly
laden or ballasted.
.
The edge of one plank over the edge of another.
A receptacle built into the boat.
A waterway-
The thwartship dimension of timber or frames.
The greatest breadth of a boat without the plank$
The skeleton templates to cut the frames by, or
to hold the boat in shape while the timbers
and stringers are being fitted.in place.
A oircular scuttle, the minimum dismeter through
which a man csn pass.
A building in which the floor is painted dtill
black, snd is used for laying off lines full
size.
The center of fore and aft lengths.
The chock in which the wireless mast is hcased.
A cut groove at a joint to take tenon.
The ends of a boat, which at the gunvnd.eextend
over the water, i.e., L.O.A. exceeds L.W.L.
Beams, mculding, etc., forming ceiling under deck.
To cover a rope with StT@ of canvas painted or
otherwise. The canvas is wound round the rope
and stitched or ‘lservedtiwith marline.
The metal hooks by which rudders are attached to
gudgeon sockets.
The outside skin of a boat; plank laid on the
frames or beams of a boat whether inside or
outside.
I ——mm,,m,,m,,m,-. m,..,-- .
,.,
,,,’
P1ank Sheer. The ~tside plank at the deck edge wliichreaches
the timber or frame hesds, snd shows the s’beer
of the boat.
Port. The left hand side of the boat Iookimg forward.
.. .. ,.,, ... .... ,. ..
Partners. A doubling between beans to take deck fittings.
Pillar. Ve.rtical supporting members uncler deck.
Quarter. Top sides between frillabeam and aft center line.
Rabbet. An angular channel or groove cut in the keel,
stem or sternpost, etc., to ~ceive the edges
or ends of the plank.
Ribands. Long pieces of plank or timber, sometimes cslled
hazpings, secured to the f%nes of a boat in a
fore and aft direction, when she is building,
and representing the dividing lines or geo-
detic lines.
Ribs. The frames or t imbezs of a boat.
Rake. At an angle to the vertical in a ??.and A. direc-
tion.
R&iings. A fore and aft by which seats or other items are
supported.
Rail”. The extreme F. and A. top line shove water.
Scantlings. The dimensions of all material used in the con-
struction Of a bOat.
Scarph or Scarf. A method of joining pieces of mood or metal by
tapering their ends. A box scarph is ‘;._hen
the ends ~e not tapered, but a half thickness
cut out of each part so that when pu.%together
the parts form only one thickness.
Seam. The 1ine formed by the meeting of two planks Or
plates.
Shift of Butts. The fore and aft distante between the ends of one
line of plank or plate and th~ of the next
below or above.
Side Keelsons. Stiffeners fitted fore and aft on either side of
the”.lceel.
-—
-9-
1 Skin. The outside ox inside planking of a boat.
Staxboarde The right hand side of the boat looking farward.
Stem. The forward vertical centinaation of the keel.
Stringer.
I
Strengthenin~ fore and afters tonneoted to frames
or timbers.
! ScantLin& !3eotion.A drawing of mid-section of a boat on which all
I
I Soupper.
Sole Beams-
Strake.
Sheer str~e.
Sheer.
I Shelf.
Sheathing.
I Skin Girth.
Souttle.
Stopping.
Sternpost.
Siding or Sided.
Stopwater.
Spiling.
~hrough Bolt.I
Timbers.
scsntl~ngs of same are stated.
A freeing port.
Thwartship beams, supporting floorihg.
A fore and aft line of plank, or plating.
The top line of planking ox plating.
Fore -d aft ourve of gunwale.
A fore and aft member rtind deok
to which timbers and beams are
inside pl~king
attached.
Metal or wood skin fitted outside planking for
additional protection.
The distante measured round planking from gun-
wale to gunwale.
An opening which csn be made W.T.
A substance used for making seams w.T. when not
caulked.
?he vertiCS3 member where the planking termi–
nates aft.
The fore and aft dimensions of timbers, beams,etc.
A soft wood dowe1 driven through deadlwood at
joint of s-e.
A yit~ of setting
Through fastening.
out a curve from a straight
Fastening that ties several
thi;kn%ses of‘znatec@ial.
The transverse ribs of a boat.
T~ansom.
Transverse.
Tie.
Tumblehorne.
Topsides.
Turtlede@k.
Tzim. “
Thwart.
Tenon.
Throat.
Timber Heads.
Tuck.
ways-
Well.
Waterways.
Watexplane.
..
-1o-
The frame at the sternpost Of a“boat. The trms -
verse board at the stern, which gives shape to
the q.,artersand forms the ~-t end of the boat.
Atllwarts‘hips. A% right
keel. .
Diagonal connecting and
angles to ‘the line of
st lengthening member.
%here the extrem breadth exceeds the bzead%h at
deck.
The uppez part of hull above W.L. excluding stem
and stern..
A deck with excessive camber.
The fore agd aft inclination of hull about L.W.L~
A seat forming tie across the hull in the ab- “-
sen~e of beazs.
A ton=we at the end
moxtise.
l The dist~ce “acrOss’
of a timber to fit imto ‘a
the flat of a knee.
Tne upper ends of the frames.
Where hollow occurs in the fomn of the stern or
quarters. “
Banlks of timber on mhich the cradle slides.
A sunken part”of the deck usualy termed cockpit.
Apert’uzesto allow watez tO flow to bilge suction.
The borizontd area of hull at water line.
.-.+: ~~
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Glossary of terms used in flying boat hull construction

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