|
|
Graham Radford Yacht Design
SEACLASS 10.6m - DESIGN #10
CRUISING/RACING YACHT
[
Home Page ] [ Contact us ] [ Price List ]
Text [ Sail Plan ] [ Accommodation ] [ Keel Options
] [ Photos ]
The construction of the SeaClass 10.6m is
designed to Australian Standard AS4132.3.
The design plans were inspected by NSW Maritime Authority and have
received prototype approval. The SeaClass can be built to survey and one is already being
used in a sailing school in
The SeaClass
10.6m a light displacement cruising / racing yacht. The general shape and style of the hull
has been developed from the very successful 10.6m club racing yacht –
RACE, the production yacht SPRINT and the very successful “Red
Jacket”. These designs have
demonstrated outstanding sailing and racing performances in
|
L.O.A. |
10.65m |
35'0" |
|
L.W.L. |
10.37m |
34'0" |
|
BEAM |
3.14m |
10'3" |
|
DRAFT |
|
|
|
Fixed Keel |
1.90m |
6'3" |
|
Lift Keel DOWN |
2.5m |
8'2" |
|
Lift Keel UP |
1.4m |
4'7" |
|
DSPL |
3,963kg |
8,737lb |
|
SAIL AREA |
|
|
|
|
36.9sq m |
397sq ft |
|
|
34.8sq m |
374sq ft |
Deck
& Accommodation Layout
An aft boarding platform provides access to the cockpit. Large cockpit
lockers aft, including self-draining gas bottle locker, are separated from the
accommodation by a watertight bulkhead. The engine and the fuel tank are
located under the cockpit. The quarter berth to port has a navigation table
immediately forward. Starboard of the cockpit there are large lockers for the
never ending items which collect on a yacht - tools, spares, odds and ends - as
well as space for extra galley stowage. This area also allows clear access to
the engine compartment.
The galley has good stowage space with room for a double sink and stove
with oven. Opening ports in the
house side and cockpit bulkhead, plus the companionway hatch, give ventilation
to the galley. The companionway boards are set forward into the house and the
sliding hatch overhangs the companionway when closed.
The saloon has two full length settee berths with well angled backs and
wide seats for comfort. The seat backs can be removed to give the required
600mm width for a berth. Lockers behind the settee backs provide more stowage,
with shelves or lockers above. A drop leaf table seats four people easily.
Water tanks are located under the aft end of the settees and under the quarter
berth. The head and shower are located forward of the saloon. Ventilation is
provided by an opening port and house top vent. Hanging and stowage lockers are
positioned opposite the head. The forward vee berths can be converted to a
double berth. There are lockers under the aft end of the berths and a sump tank
and sail stowage forward. A watertight / collision bulkhead forms the forward
end of the berths and part of the self-draining anchor locker.
Keel
options, Rudder
There are two keel options - a moderate 1.9m draft fabricated duplex S.S.
fin keel with a bulb or a deep draft lifting bulb keel for those wanting
optimum performance and the added benefit of shallow draft with the keel
raised. The spade rudder is constructed using FRP and foam and a duplex
stainless steel rudder stock. A
tiller is used for simplicity.
Sail
plan
The fractional rig has double, swept-back spreaders. The mainsail can have full length
battens or leech battens. A furling, self-tacking jib is simplicity itself for
day sailing and cruising.
Engine
The maximum hull speed of the SeaClass 10.6m,
at Speed / Length Ratio (S/L) = 1.34, is 7.8 knots. An efficient cruising speed
is at S/L = 1.1, or 6.41 knots. The list shows the required shaft horsepower
(SHP) for different speeds at 4,500kg (9,920lb) displacement. Note the rapid
increase in required SHP (hence fuel consumption) for small gains in speed.
Based on a speed requirement, select an engine which - running at an
optimum RPM - will give the required SHP for that speed.
|
S/L Ratio |
Speed - knots |
SHP |
|
1.00 |
5.83 |
8.18 |
|
1.10 |
6.41 |
10.88 |
|
1.20 |
7.00 |
14.13 |
|
1.30 |
7.58 |
17.97 |
|
1.34 (maximum) |
7.81 |
19.68 |
In Conclusion
In conclusion, the SeaClass 10.6m is a good
performing, general purpose yacht catering for those who want to participate in
family sailing and/or club, offshore and short-handed racing in a versatile
10.6m yacht.
[
Home Page ] [ Contact us ] [ Price List ]
Text [ Sail Plan ] [ Accommodation ] [ Keel Options
] [ Photos ]