NEW MONOHULL CATAMARAN DESIGN

DESIGN DATA

L.O.A. 14.68 Metres

L.W.L. 14.00 Metres

Beam 8.00 Metres

Draft Mini Keels 1.00 Metre

Displacement 10,000 Kg

Load Max 4,000 Kg

S.A. 143.5 Squ Metres

The Monohull 1480 Catamaran is a serious world cruising catamaran designed for crossing oceans in total comfort and style. Unlike many catamaran designs available today the Monohull 1480 is designed with an emphasis on strength, safety and the personal comfort of the crew.Accommodation has been designed with the specific needs of live aboard families, with added special features such as a laundry and separate toilet and shower facilities.The accommodation features three enormous double cabins, each with a vanity, hanging locker, seating and large amounts of storage space. The laundry room, situated

aft in the port hull, also contains a double berth and is easily converted to a fourth double cabin. In the saloon two sea berths are fitted above and behind the saloon (above the forward cabin berths) to provide easy access berthing for the on watch crew while at sea.The vessel features two toilet compartments. The main compartment in the port hull is divided into toilet and shower areas, to allow each to be used individually. The second W.C. is on the bridge deck beside the helm platform, and opens to the cockpit for day use. If desired a second door to the saloon will allow the use of this area as a wet room for bad weather gear. This design eliminated one of the most objectionable features on many large cats - toilets in the sleeping areas. Headroom is a min. 2 metres throughout. The main accommodation areas feature a very spacious saloon with dinette and chart area, and an enormous galley. A feature of the vessel is the raised helm station (covered) which allows the helmsman to steer the vessel without having to peer over or around (or worse, through the windows of) the turret cabin.Auxiliary power is from twin diesels (40 – 50 hp) under the aft berths. Construction of the hull and bridge deck is the proven

cedar strip / fibreglass composite, while the decks, cabins and joinery are ply or composite sheet material, depending on the builders taste and depth of pocket. The vessel features a powerful

fractional rig to provide excellent performance, and for cruising simplicity has mini keels and fixed rudders.

DIMENSIONS

L.O.A. ........................................................ 11.60 Mtrs

L.W.L. ........................................................ 11.33 Mtrs

Beam ............................................................ 6.78 Mtrs

Draft ............................................................... 1.00 Mtrs

Displacement ................................................... 6300 Kg

Vessel Weight (light boat) ............................... 5300 Kg

Hull Beam / LWL

ratio .......................................... 10.4:1

Sail Area ............................................... 84.50 Squ Mtrs

Maximum Payload .......................................... 2000 Kg

Payload to Load Waterline .............................. 1000 Kg

Headroom (average) .......................................... 2 Mtrs

Bridge deck clearance .................................... 0.83 Mtrs

The Monohull 1160 Catamaran is a full bridge deck cat built in cedar strip/glass composite, to produce a sound and comfortable ocean cruising yacht . Paulownia or Duracore could be used as alternatives. Bulkheads and partitions are in plywood, with interior joinery in honeycomb composite panels.

The Monohull 1160 is intended to be easy to build, and capable of living aboard and ocean voyaging. Because she is intended for extensive live aboard cruising, she has been designed for strength, load carrying ability and internal roominess. She is designed for safe and comfortable sailing combined with good speed (boats launched to date have reported excellent performance), and as such is, at 6.3 Tonne, a medium displacement vessel. The design features mini keels for cruising simplicity and cost , inboard diesel sail drive engines for safety, convenience and reliability and alternate internal arrangement choices.

The Monohull 1160 comes with a medium tech fully battened sailing rig and alloy mast and boom as standard. The rig is the typical heavy roach, fully battened main and 7/8th rig which time has shown

to be the most efficient rig for this type of  vessel.

CONSTRUCTION

The Monohull 1160 utilises what I like to think of as 'sensible' material choices, using the best material for each application. The hull shell is cedar strip and glass composite, for strength, and ease

of construction and acceptable cost, while the bulkheads and partitions are plywood for speed of construction and low cost. The cockpit area employs foam / glass composite panels for ease of construction, and the joinery is in Honeycomb / glass panels for ease of construction and light weight.

Full use has been made of timber / epoxy construction, with a minimum of timber framing.

ACCOMMODATION

The Monohull 1160 comes with three alternate accommodation plans (standard galley up and galley down, plus a 4 sleeping cabin option) Both standard arrangement plans feature twin berth

cabins forward and a double berth in the aft Starboard hull, with W.C./ Shower compartment to port aft. The galley up arrangement features galley and dinette on the bridge deck, whilst the galley down features a larger lounge area and navigation chart table on the bridge deck , plus a larger galley in the mid starboard hull. The 4 cabin option features sleeping cabins fore and aft, port and starboard, with the W.C. compartment mid-ships to port.