The two boats in the class 93 & 94 of the 46ft Crash & Rescue tenders were constructed by Vosper Ltd of Portsmouth in1952 for the R.A.F.
The hulls were of double skin mahogany on birch plywood framing. Powers was from two Rover Metorite engines of 375 hp each, This was a 8 cylinders V type engine of 18 litres Drive was to 2 X 3 blade props (both rotating the same way) Giving a top speed of 28 + knots
Fire fighting was from two 3.5" fire monitors that could spray water of foam. The power for the pumps was from a Ford V8 engine to give 5-600 g.p.m. This pump was also be used as a salvage pump.
For rescue work she was fitted with a spring tow hook, line throwing equipment and rockets, stretchers and a portable davit.
The two craft were taken into service in 1952-53 at Calshot. They spent many year as experimental craft for it is alleged that they were designed to complement the SARO princess flying boats that spent many years at Calshot. The craft were reported to have startling acceleration and could stop in there own length once the automatic 7 sec time delay came into effect on the reverse gear. They had a turning circle of three boat lengths at 28,5 knots.
Both boats were sold from service in 1958.
Details of the kit
Scale 1/24 Length 610mm Beam 180mm Sailing weight 2kgs
The kit is based on a detailed glassfibre hull with rubbing strip, fender strip, proptube and rudder exits, moulded into the hull.
The Deck is from 1.5mm LASER CUT Hi Impact plastic. 1mm laser cut and .5mm laser cut sheet supply internals and detail parts Vac-fomings supply the nicads battery tray, rudder servo mount and motor mounting for the internals.
Vacformings in clear styrolux form the forward and aft cabin assembly. Printed plastic supplies the construction for the aft cockpit.
A new system for clear windows has been developed for this model consisting of computer cut masking film which is fitted onto the clear mouldings, the cabin is then primed and painted and the film removed.
Computer cut "aluminum" frames fitted onto the clear plastic for windscreens etc, cabin windows, skylights etc. Cut window frames are then applied over the edge of the clear parts. This removes one of the jobs that modelers tell us they dislike, that of cutting our complicated windows from mouldings, all similar sizes, with complex corners.
A full set of fittings in cast alloy and resin is included in the kit , along with propshaft,proellor, rudder, and tillers arm, plus decals for that finishing touch to this colourful model.
To aid construction a comprehensive instruction book and full size plan is included.
The full size craft were noted for their rocket like acceleration and stopping ability, plus outstanding handling.
The model with its boat weight of 970gms and powered by its recommended black 400 motor and nicads gives all handling characteristics of the full size craft, i,e it is a delight to drive.
Deans Marine wish to express there appreciation to VOSPER THORNYCROFT Ltd of Southhampton for the invaluable help they have given us from the archives, plans, and the photographic section without this help and assistance the project for this delightful, and well known craft would not have been possible.