The Treeve DS20 has a unique hull design
featuring clean forward entry and a pronounced knuckle giving a concave
scoop to the bow. This combined with a generous sheerline enables the Treeve
DS20 to be driven into head-seas and still retain a dry interior.
The DS20 has a deep enough draught and ample freeboard to
master with ease sea conditions and tidal races while straight keel and bilge
keel flats ensure manoeuvrability and allow it to be launched from beaches
and coves.
The full hull of the DS20 can be driven with a
conventional arrangement of inboard engine and sterngear, or an outboard
motor mounted in an enclosed transom well.
Designed by Denis Swire C.Eng FRINA the Treeve DS20 is
without doubt a unique and enormously successful concept of an easily
driven, multi-purpose rugged workboat with exceptional sea-worthiness and
economy of operation. The DS20
is available as an open boat or three standard cabin options are available:-
Full forward traditional Cornish
Forward offset;
Aft pillbox style.
The Treeve DS20 is
fitted with our standard heavy duty keel irons made from
3/8" plate and �" lugs. Timber keels for
beach launching may be added. There is ample
room forward of the inboard diesel engine to fit an hydraulic pump and
equipment. The deck may be self draining or loose board depending on
preference. The steering may be either underhung steel semi balanced or
traditional transom hung timber rudders.
SPECIFICATIONS
DIMENSIONS
OVERALL LENGTH
6.10m (20')
WATERLINE LENGTH 5.67m (18' 9")
BEAM 2.6m (8')
DRAUGHT 0.8m (2' 7")
CONSTRUCTION (HAND LAY-UP)
HULL LAY-UP
11oz Laminate made up as follows:-
1 gel coat, Pigmented throughout or clear below waterline as preferred
1 x 1oz CSM and 5 x 2oz CSM
Transom reinforced: Lay-up 2 x 2oz CSM
Sheerline reinforced: Lay-up 2 x 2oz CSM
Keel joint reinforced 1 x 1oz CSM and 5 x 2oz CSM
Transverse frames and longitudinals 3" x 2" polyurethane expanded foam
encapsulated by 3 layers x 2oz CSM, staggered timber inserts on sheerline
Beam shelf as above according to customers own requirements
KEEL
100x20mm (4 x 3/8") steel strap
with lugs.
STEM
Shaped galvanised
stemband
CATHODIC PROTECTION
Zinc
BILGE KEELS
Approved hardwoods /
Iroko 100x 50mm (4 x 2")
ENGINE BEDS
Hardwood 1�
x engine length set in longitudinal foam stringers
fore and aft encapsulated in 8oz GRP
ENGINE BOX
Moulded GRP soundproofed
as necessary.
RUDDER
20mm (�") ply blade and cheeks
or hardwood option
RECOMMENDED ENGINES
Recommended 22hp.
OTHER
EQUIPMENT
Bilge pump, fairleads.
Safety equipment to customers requirements | 
