Displacement
Displacement may refer to:
Physical sciences
Mathematics and Physics
*Displacement (geometry), is the difference between the final and initial position of a point trajectory (for instance, the center of mass of a moving object). The actual path ...
(without ballast)
, valign="top", 380 kg
, -
, valign="top", Sail area of total ketch rig
, valign="top", 13.94 m² (150 ft²)
The Jolly Boat is a 15 foot (4.6 metre) ketch rigged open day-boat designed by J. Laurent Giles. Originally designed for
plywood
Plywood is a material manufactured from thin layers or "plies" of wood veneer that are glued together with adjacent layers having their wood grain rotated up to 90 degrees to one another. It is an engineered wood from the family of manufactured ...
construction, more recent examples were made with GRP with plywood decks and bulkheads, manufactured by AJS Marine Services in
Chichester
Chichester () is a cathedral city and civil parish in West Sussex, England.OS Explorer map 120: Chichester, South Harting and Selsey Scale: 1:25 000. Publisher:Ordnance Survey – Southampton B2 edition. Publishing Date:2009. It is the only ci ...
. The standard specification was described as a
yawl
A yawl is a type of boat. The term has several meanings. It can apply to the rig (or sailplan), to the hull type or to the use which the vessel is put.
As a rig, a yawl is a two masted, fore and aft rigged sailing vessel with the mizzen mast p ...
rig, however the mizzen mast is mounted forward of the rudder making the rig a
ketch
A ketch is a two- masted sailboat whose mainmast is taller than the mizzen mast (or aft-mast), and whose mizzen mast is stepped forward of the rudder post. The mizzen mast stepped forward of the rudder post is what distinguishes the ketch fr ...
(in modern terminology, see yawl: historical usage) although this is unusual for so small a boat. The
foresail
A foresail is one of a few different types of sail set on the foremost mast (''foremast'') of a sailing vessel:
* A fore-and-aft sail set on the foremast of a schooner or similar vessel.
* The lowest square sail on the foremast of a full-rig ...
is mounted on a
bowsprit
The bowsprit of a sailing vessel is a spar extending forward from the vessel's prow. The bowsprit is typically held down by a bobstay that counteracts the forces from the forestays. The word ''bowsprit'' is thought to originate from the Middle L ...
. A
sloop
A sloop is a sailboat with a single mast typically having only one headsail in front of the mast and one mainsail aft of (behind) the mast. Such an arrangement is called a fore-and-aft rig, and can be rigged as a Bermuda rig with triangular sa ...
rig version was also available. In the ketch configuration the mainsail is gaff rigged and the mizzen a balanced lug. A steel centre plate and ballast makes the boat quite stable, and the high topsides, broad beam and large cockpit are designed with comfortable family cruising in mind. An outboard well on the port side is provided for a 4 h.p.
outboard motor
An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. They are the most common motorised method ...