Boat Lines
Sail Plan
Sail Plan
Sail Plan
Sail Plan
Sail Plan
Sail Plan
Sail Plan
Sail Plan
Sail Plan
Sail Plan
Sail Plan


Specification of the Whitehead One design Class designed by John Wylie 1903

All materials used to be of best quality and all timber to be sound and free from sap and well seasoned.


Length over all 18′ 11/2″
Load water line 14′ 6″
Beam extreme 6′ 0″
Draught 2′ 9″
Sail Area 197 square feet
Displacement 2500 lbs (3 of crew on board)
Weight of Iron Keel 1120 lbs


English Elm
moulded 21/2″ amidships sided 81/4″ & tapered as shown

Oak Crook
moulded sided

moulded at keel 6″ and at transom 2″ sided 11/2″ aft and 13/4″on fore edge

moulded and sided to fit keel and stempost

Birch or other Hardwood
11/4″ thick of shape shown sawn to curve

sawn to shape and spaces 2′ 3″ centre to centre (Wrought Frames) moulded 2″ at keel tapering to 11/2″ sided 11/2 ”

American Elm
two timbers placed between wrought timbers Timbers 3/4″ x 1″

Galvanised Iron
bolted to wrought frames

Pitch Pine or Red Pine
3″ x 11/4″ fastened to each timber

moulded 11/8″ sided 1″ mainbeams sided 11/4″ spaced 1 foot apart

moulded and sided 11/2″ Beams and Carlines to be dovetailed to each other and into shelf

Oak Crook
4″ x 1″ at throat to 1″ x 1″ at ends 9″ arms

Oak Crooks
3″ x 1″ at throat to 1″ x 12 at ends 1 pair lodging knees at main beam in wake of mast 1 pair lodging knees ahead of mast 1 pair hanging knees ahead of mast 1 pair lodging knees at ends of cockpit 1pair lodging knees at quarters 1pair lodging knees to take curve of coaming at stem

Pitch Pine – 3/4″ from keel to load line
Yellow Pine – 3/4″ from load line up

Top Strake
3/4″ with hollow bead for gold line
All planking to be through fastened at both edges wih every timber and floor frame
Widths not to exceed 7″ except at garboards To be caulked with cotton and stopped

Yellow Pine – 5/8″ to be caulked and paid with marine glue.
Teak – Centre plank Camber of deck 31/2″ amidships

Covering board
Teak or American Elm

1″ X 3/4″ Running from stem to stern with waterways cut.

7′ 6″ x 3′ 10″

Pitch Pine
1/2″ toungued and grooved with a door and button.

3/4″ with shelf at back as shown, carried on Pitch Pine brackets.

3/4″ on 2″ x 1″ red Pine bearers 1′ apart. To run from bulkhead to mast at level shown and from mast forward as shown, also suitable pieces to be fastened to the frames to keep the feet from the skin.

Elm 5/8″

Main part of oak.
Yellow Pine
Web of yellow pine with wood lock. Hardwood tiller with yellow metal 1/4″ bolt through rudder head.

Iron Keel
To be cast to shape shown and to be fastened with 3/4″ galvanised bolts at stations shown.
The bolts to pass through keel.
The top surface of iron and under surface of keel to be well red leaded.

Deck Fittings
Shroud plates and all usual iron work on deck and on spars to be fitted and of good quality.
A boom crutch with metal toes to prevent unshipping.
All usual sheet leads , cleats and eyebolts to be fitted as required.
A stout iron cable roller with sliding bolt on each side of stem as shown.
A chain pipe through deck.
Shroud plates to be fitted inside planking.
Rowlock holes in cleats on coaming.
A mooring horn as shown.

A complete set to the dimensions given of clean grown Spruce. The jaws of gaff to be hinged.

All fastenings to be copper. Yellow metal or brass screws.

All iron work to be of good quality and well galvanised.

The whole of woodwork and spars to receive four coats of best paint or yacht varnish and to be properly stopped and rubbed down between each coat.

One pair of 10′ oars and rowlocks to suit

Diameter at deck 31/2″ at hounds 3″ shouldered to 21/2″
Length deck to sheave pin 15′ 8″
Sheave pin to hounds 4″
Hounds to top 4″
To have one centre sheave for lug and one in cleat on each side
Galvanised spike in top for signal halliard.
Spiderband to have one cleat on each side.

Diameter 23/4″
Length gooseneck to sheave pin 16′ shouldered at outer end to2″
Reefing cleats, outhaul cleat and runner for clew.

Diameter 23/8″ Length from jaw pin to hole on peak 12′ to hook 4′ 7″

Boom Diameter 21/4″
Length 10′ 0″

Sails and Rigging

Lug and jib with spinnaker.
Sails supplied to be lug,first and second jib, spinnaker.
Sail bags and cover for lug. Six sail ties.
Lug to have three rows of reefing points and the usual earing and eyes for lacings.
Batten pockets and battons to fit.

Standing Rigging
One forestay and two shrouds to be set up with lanyards.
Each to have eye spliced to upper end to fit mast, 21/2″ diameter.
Galvanised flexible wire 1/4″ diameter, length of each 15′ 9″.

Running Rigging
Lug to be set up with a galvanised flexible wire halliard 1/4″ diameter shackled on to gaff and running through a sheave at mast head and having a block spliced to the other end for a Manila purchase as shown.
Length of wire halliard 15′ 9″ over all. Length of Manila 54′ 1″.
Purchase, double block on deck and single on haliard.

Set up with Manila haliard through single block in wire strop leathered over mast head and single block on deck.
Clip hooks on end of 43′ 0″ of 1″ Manila.

Haliard through sheave in cleat at mast head. Length 34′ 0″ of 1″ Manila.

Main Sheet. 1″ Manila 4strand soft laid 50′ long runs through single block on each quarter and single block on boomin wire leathered strop.
Jib Sheets. Double sheets with short length at centre to make fast to clew of sail.
Length of each sheet 15′ 0″ of 11/4″ Manila.
Spinnaker. Sheet 12′ 0″ Guy !9′ 0″ Each having a large loop spliced on end.

Topping lift
Eye spliced on one end to ship onto end of boom 2″ diameter. Length 40′.
Lift goes through sheave on side of mast head.
Reefing Pendant 12′ 0″ of 1″ Manila.

Flexible steel wire with eye for shackle at one end and a single block at other.
Length of wire 2′ 9″ and of rope for purchase 10′ 0″.

White cotton on boom and gaff, a stouter line on mast.

Hambro line.

Flag Haliards
36′ 0″ A distinquishing number to be sewn on each side of the peak of the lug.
Jaws of gaff to be leathered and beads put on with wire.