HOME          MODEL RANGE         CONTACT US            GALLERY        VIDEO DOWNLOAD          PRICE LIST

SAFEHAVEN MARINE.  Builders of the Interceptor & Wildcat range of offshore craft






            The Wildcat has been designed from the beginning to combine safe dependable sea keeping and stability with performance and economy. The Wildcat hull design utilises symmetrical planning hulls. Symmetrical hull shapes were chosen for their directional stability in short, steep swell conditions in following and quartering seas. The hulls are multi chine in form. The main chine deflects water out and away form the hulls having a two-fold effect. On the outboard chine this improves ride dryness and reduces wetted area. On the inboard chine the spray is turned so that in waves it provides a cushion effect. The spray is mixed with air coming down the tunnel and creates a high-density medium, which dampens motions through waves. The likelihood of slamming on the bridge deck is virtually eliminated as a result of the hull riding on this high-density spray cushion. A second chine situated 200mm higher than the main chine and further aids in boat dryness, especially at lower speeds when the main chine is mainly immersed.

Full-length keels are incorporated, and provide protection to the propellers, as well as increasing the hulls grip on the water for slow drift speeds.

The vessels beam has been constrained to a wide 15ft 6”, providing a good compromise between work area, stability, and minimal slamming that tends occurs on catamarans that have a very wide bridge deck. Also marina space and berthing facilities are considered, where excessive beam can be hard to facilitate.

Due to the slender nature of the Wildcat’s hulls, in choppy conditions vertical accelerations are much reduced in comparison with a mono hull’s, giving a gentle ride and motion. However previously the biggest disadvantage of the older type of catamaran hull, which featured very fine sections fwd with little reserve buoyancy, giving a very smooth ride in short sea states but suffering badly in ocean swell conditions due to slamming on the bridge deck. This shortcoming has been solved with much fuller fwd sections, offering greater buoyancy and giving the hull the necessary lift to prevent slamming on the bridge deck,  allowing higher speeds to be maintained into larger ocean swells. In following seas the Catamaran has a distinct advantage, the twin hulls form a ‘grove’ in the water allowing the hull to track as if on rails whilst the tremendous transverse stability means the hull suffers little yaw and surge, especially in quartering seas allowing virtually  ‘hands off steering’.

The Wildcat has a very large flush aft cockpit. The walkway up each side of the cabin is wide enough for two persons to pass each other and at the fore deck, mooring and anchoring is easily and safely carried out. The anchor locker is very large and incorporated in to the superstructure, forming a comfortable seat as well. Accommodation on the vessel is to a good standard, being lined and carpeted, and constructed in a combination of teak and GRP mouldings. The helm console is central in the cabin and offers excellent visibility. Either side is standing room with doors leading down to the fore cabins in each hull, which feature a reasonably sized V berth. There is a large galley to st/bd with sink, strainer and gas hop with plenty of sliding drawers and lockers below. Opposite to port is a very comfortable curved settee with a folding table. The heads compartment is accessed from the aft cockpit and usefully, can be hosed down. The two engines are situated below large flush hatches which feature very wide and deep 5” x 6” drainage channels and several outlets, which should ensure zero water finds its way below decks.

With 8 vessels now in commercial service the design has proved very successful with exceptional sea keeping capabilities and performance.



SEE 'JO DAN IV' Another Wildcat Catamaran. (pictured below)

Click here to see our new 2004 Model 'Motor Yacht version' of the Wildcat (shown below)


 From these photos a good idea of the Wildcats stunning lines can be appreciated. The hulls swooping sheer line combines with her raked stem to make her form graceful, yet with a hint of  aggression. She is set to become the most attractive Cat around. Studying the hulls you can see there is plenty of buoyancy in the hulls f/wd sections, which combined with the high bridge deck should ensure excellent sea keeping with out the slamming of waves on the bridge deck, a problem suffered by some of the older generation of cats, (pre south boat). Seen below, the first fully completed Wildcat.

The Island wheelhouse design of the superstructure gives a huge amount of gunwale space allowing anglers to spread out resulting in less tangles. Access all around the boat is greatly improved over conventional cabin designs making the Wildcat very easy and safe to operate.

The Interior is fitted out to a high standard with a fully lined and carpeted main cabin incorporating GRP mouldings and strong solid teak woodwork. Access f/wd down in to each hull where there is a V berth and full standing headroom.


A comfortable settee and fold away table gives relaxed seating.

The large galley with sink and drainer, gas hop and several useful pull out cabinets and drawers.

Propellers run in tunnels and are fully protected by skegs. Easily beached.

The toilet is accessed directly from the aft cockpit, giving easy access for passengers and can be hosed down!


Engines are situated below large flush hatches with large 4x6" drainage channels, 4x 2" drains and a heavily reinforced hatch raised and lowered by hydraulic hatch lifters.

The WILDCAT'S beam can be appreciated here, alongside our Interceptor 38 which has a fairly typical 12ft beam.





L.O.A.                                     36FT / 10.7M

BEAM                                    15FT 9” / 4.8M

DRAFT                                   2FT 10 / .9M

DISPLACMENT-                  8,550KG LIGHT / 10,500KG LOADED

FREEBOARD -                     MIN 750mm











The following construction details apply on  craft used for sea angling operating in favourable conditions, General build and scantlings  in accordance with Lloyds Special Service Craft Rules / Standards  for a maximum operational speed of 16kts on an operational displacement of 10500kg (14 persons) in sea conditions as outlined below.



Allowable speed ( kts )                      Max significant wave height ( m/ft )


10.0                                                     4.0  / 12.8

12.0                                                     3.5  / 11.2

13.0                                                     2.9  / 9.5

14.0                                                     2.5  / 8.2

16.0                                                     1.8  / 5.9

18.0                                                     1.3  / 4.2




Hull laminate schedule / lay up wts -


Hull bottom      Isophthalic gell coat to minimum  0.3mm ( white pigment used below water line to prevent osmosis )

300gm2 using isophthalic resin.  Composite as follows-

900gm2 CSM.. 800gm2 WR. 900gm2 CSM. 800gm2 WR. 900gm2

Total shell laminate    Bottom -  4600gm2 / 16oz


Hull sides          Isophthalic Gell coat to minimum 0.3mm.


300gm2 using Isophthalic resin.

900gm2CSM.  800gm2 WR.  900gm2 CSM.  800gm2 WR

                                   Sides -  3200gm2 / 13oz


Reinforcement - Keel. Additional layers extending min 300mm from keel across bottom. Each layer stepped back 25mm.      

Keel -  5600gm2 / 19oz



No colouring agent used in lay up.

No longer than 24 hrs between layers to ensure chemical bond.

Immediately after cure of main laminate & whilst still in mould the following stiffening is bonded -


Transverse frames- 100mm x 100mm  @ 790mm centers.  Max panel dimensions,  bottom - 250mm x 690mm . side - 250mm x 690mm. (measured between stiffeners)

Max span, bottom - 0.50m.  side - 0.5m. 2100gm2 laminate fw/d frames. Lay up: 300CSM. 900CSM, 900CSM


Main Longditudal girders -  Main longditudals foam cored  100mm x 800mm.   Lay up: 900gm2csm, 800WR, 900gm2csm laminate overlap150mm.



Secondary longditudal panel breaker / stiffener

Semi circular foam cored panel breakers 60mm base used in forward hull bottom panel to reduce panel width. Lay up- 900csm, 900csm, 800WR  ( giving a max panel width over bottom of 285mm)


Additional side stringers / pannel breakers

60mm semi circular panel breakers positioned on the side shell out board to give max panel width of 250mm.


Engine girders -  Wood cored (multiple layers plywood laminated together)  200mm D x 100mm H.  2700gm2 laminate extending 300mm min & staggered.


Bulkheads –3 Transverse bulkheads as per drawings constructed from ½ ”/ 12mm plywood overlaid 600gm2 per side. Additional collision b/head in bow.




½“  plywood, gell coated bottom, encapsulated 900gm2 top. Supported on 4”x2” Transverse deck beams @ 16”/400mm centres. Bulkheads notched to receive and bonded. Multiple vertical support beams & webs as per drawing. Deck shelf wood cored as per drawing and bonded to hull 1800 gm2. Hull to deck join - 1800 gm2, min overlap 125mm.




GRP moulding of 2100gm2 - 3600gm2 laminate. Additional wood cored stiffening overlaid 1800gm2. Internal partition bulkheads & wood work (seating, lockers etc ) forming additional stiffening to structure. All glassed into superstructure using 1800gm2 laminate with min50-75mm angles. White flow coat on external surfaces.

Superstructure bolted to hull using 6mm c/sunk bolts @ 6” centres. 900gm2 laminate to bond superstructure to hull.

Wheelhouse section attached to deck with 6” angles, 1800gm2 laminate, bolted through deck with reverse flange @ 12” centres.


Materials -

All Lloyds approved GRP materials (resin & glass) used in the construction of hull. Details provided.


Deck openings & hatches.



Engine compartment. GRP flush deck engine hatch with 100x 100mm large drainage channels and 2x s/s locking mechanisms closing on watertight rubber seals, 2x hydraulic rams or 2 electric lifters


Access to rudder -  GRP  watertight hatch. With drainage channel, 2 hinges and one locking mechanism


Access to fuel shut off  Circular 200mm brass water tight hatch.


Engine Air Intake -  Air intake opening 300mm above deck level.


Engineering -

·        Engine –Twin Caterpillar 3126 rated at 300hp each, diesel. Twin disc  1.5:1 gear box. All installation completed. All fuel lines fitted in 10mm copper with fuel shut off valve & Vetus  primary filters / water separators on feed lines. Engine water intake sea cocks & vetus water  strainers using fire proof pipe to connect to engine.

·         Conventional stern supplied by CLEMENTS ENGINEERING gear using 1 ¾” T met shafts. Deep sea seals.  Flexible R & D couplings. Pendant hung balanced rudders with emergency steering square.

4 blade 21” dia   equipoise propellers.

Max engine installation angle 3-4 degrees

Shaft angle 9 degrees.

Propeller tip clearance 12%

       Wet exhaust systems, straight through 6” pipe with vetus transom outlets and non return flaps.

·        Vetus hydraulic steering system MTP52R helm pump & MTC125 ram, 10mm copper pipe work, flexible section to ram, By pass valve.


Bilge pumping arrangements.


8 no 1 ½” manual bilge pumps with diverter valves serving each individual compartment. Additional electric bilge pump with high level alarm in engine compartments.



Gunwale -

·        GRP aft cockpit gunwale incorporating . 75 x 45 mm h/d rubber fendering all round.


Windows -

·        Aluminium framed 6mm toughened glass, clamp in type. Escape hatch in foreword cabin. Opening s/bd side window.


Cabin bulkhead door - 

·        H/D Plastic door & frame, locking, outward opening. 300mm sill height.


Toilet door-

·        H/D plastic door & frame, locking, outward opening. 300mm sill height. Accessed from aft deck.



Interior -

·        General arrangement consists two  fore cabin, one in each hull with two V berths with, toilet compartment situated in main cabin accessed from aft deck.  Galley situated to st/bd behind helm Main cabin layout has central helm with CAB 300 series hydraulic sprung helm seat on GRP pedestal incorporating storage locker. Dinette seating  and table between with option of converting to double berth, storage space under seats. Storage space with work top and lockers to port and st/bd in fore cabin

All  main cabin wood & trim in matt varnished teak as per standard drawings. Seat cushions in buttoned vinyl. All interior GRP surfaces in main cabin fully lined with light grey carpet. Rubber non slip matting on cabin sole.


Toilet compartment -

·        Separate compartment with door accessed from aft deck. Manual   Sea toilet & all sea cocks fitted and connected. Wash down smooth GRP mouldings inside toilet compartment. Optional Shower compartment incorporated with Sump and pump to drain.


Galley -

·        Two burner hob, fitted to galley unit comprising laminated work top, storage shelf  with lockers below, Shelf  above work top, Cup holder on bulkhead. External mounted gas bottle supply point inside dedicated locker. Gas alarm fitted. Stainless steel sink unit with pressurised water system served from water calorifier with hot and cold water, 12 gallon vetus water tank fitted and plumbing completed.




Fuel tank -




       Fuel tanks are to be constructed of 12mm plastic, baffled to provide a max un-baffled volume  per tank of 20 gallons.

       Each tank has a capacity of 125 gallons.

      Each tank will serve one engine.

Each tank will have a shut off valve on the main supply line capable by either its positioning or by cable operation be capable of being close manually from outside the engine compartment.

15mm Copper fuel line used except for flexible connection to engine









1.      Three separate, 12 volt battery banks, for (a) Engine, (b) Services & (c) Bow thruster. Each are charged from a 90 Amp Alternator via a compensated ‘split diode’ charge distribution system.

2.      Three separate battery isolation switches are provided in a protected and accessible position along with three inline main fuses.

3.      A 12  thermal breaker distribution board, enclosed in a none corrosive panel to IP65.

4.      Separate Voltmeters for service and engine battery banks.

5.      Engine, fuel tank, propeller ‘A’ bracket and rudder stock bonded to anode with 6 square cable and soldered cable lugs.

6.      Aqua Signal navigation lights series 55.

7.      Deck flood light to marine standard, with stainless steel brackets. (optional)

8.      Engine control panel ( type depending of engine manufacturer).

9.      Electric bilge pump with ‘hand – off – auto’ panel switch.

10.  Bilge  level alarm with audible and visual indication.

11.  Hold and engine room lighting.

12.  Single marine window wiper.

13.  Cabin lighting, switched locally

14.  Electric  pressurised domestic water system.



Optional Additional extras.


1.      Full electronic fit for communication and navigational systems to customer requirements.


2.      Emergency standby VHF battery and isolated charging system.(Dept of the marine

      requirement  for fishing vessels with DSC radios.). 

3.      Shore power connection with distribution board and outlets.

4.      Mains ‘switch mode’ battery charging facilities.

5.      On board entertainment system.

6.      Voltage Inverter to requirements.

7.      Cabin heating and window demister.

8.      Microwave.

9.      Night lighting.


Anchor locker

Anchor locker Positioned in bow forward of collision bulkhead with hatch, self draining



Mooring arrangements - 

·        Large bow bolard, 2 x midship cleats, 2 x stern bolards.



Railings - 

Constructed from 1” / 25mm mirror polished  316 grade stainless steel. All railings in passenger area at 1000mm height with chain closure of all gaps.


Mast -  

·        5ft ‘A’ frame type constructed from 1 ½” / 38mm 316 grade mirror polished stainless steel with, anchor light and mounting point for radar.



·        GRP moulding , 2x Vetus seats on aluminium pedestals. Dual steering and engine controls. Access ladder constructed from 1 ½” 316 S/S with aluminium tread plate on steps. Railings constructed from 1” 316 s/s.




Fire fighting

Fire protection in the engine compartment.


Composite construction used in shell laminate alternating between CSM and Woven rovings. In any case the final layer in the engine compartment to be of 600gm2 Woven Rovings.


In the event of fire in the engine room the following provisions are made to prevent flooding.

The engine compartment is served by two automatic or remote (as applicable) fire extinguishers of sufficient volume to starve a engine room fire of air and extinguish the fire. Manually operated flaps on the air vents close off air supply to the engine compartment.




Minimum Freeboard is  .750mm


The aft cockpit has four scuppers of sufficient size to adequately drain the cockpit from any green seas and spray.





The gas installation comprises a dedicated sealed gas storage locker venting overboard situated in the aft cockpit. This supplies the cooker via a 10mm copper pipe, securely clipped and routed. A second shut off valve is fitted at the vicinity of the cooker.

A gas alarm is optionally  fitted to the vessel with the sensor positioned in the bilge.









Hit Counter