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Osborne twin engine motor yacht - SOLD

  • Designer: William Osborne ltd
  • Builder: William Osborne Ltd
  • Year: 1964
  • Location Wales
  • Length on deck: 45'
  • Beam: 12'3"
  • Draft: 3'
  • Tonnage(TM): 23TM


REF: 5123

Full Specification

Wooden ships comments on this Osbourne twin engine motor yacht

Osborne twin engine motor yacht designed and built by Osborne’s of Littlehampton in 1964.

Hard chine semi displacement hull which was a design development of the typical motor yachts that were in production at the time.  The advent of marine diesel engines with a better power to weight ratio meant there was a growing demand for comfortable motor yachts with more speed than the conventional round bilge boats that would cruise at 8 knots.  The Osborne offered comfortable and economic cruising at 12 knots which makes an enormous difference over the length of a passage.

Transom stern with a straight stem and reasonably high freeboard means there is a lot of useable space within the hull, allowing for two separate cabins, two heads, a large saloon and spacious wheelhouse.


The hull is constructed of double diagonal mahogany with a layer of white lead and calico between, all through fastened with copper rivets.  Widely spaced oak frames help give rigidity to the hull.

This was a tried and tested method of construction by this time and gave a very effective strength to weight ratio which was perfect for the semi displacement planing hull.


Deck is laid in teak over a ply wood sub deck and joggled to a varnished coverboard, screw fastened to pine deck beams.


Plywood coamings and superstructure, finished in varnish.

Central raised wheelhouse with sliding entrance doors port and starboard and good visibility from large windows.

Forward coachroof over the saloon with aluminium framed windows and sheathed plywood coachroof deck.  The coachroof leaves side decks and foredeck large enough for easy passage moving around the boat.

Aft coachroof over the aft cabin with stainless steel rails all round with a teak capping.  Outside helm position at a stand alone consol on the aft coachroof deck with a single helm seat and windscreen for protection on the wheelhouse roof.  Hydraulic wheel steering.

Stainless steel stanchions and railings all round, bolted through the coverboard, with a varnished teak capping rail.

Chromed bronze deck fittings including cleats and fairleads.

Osborne twin engine motor yacht


Pair of General Motors 6cyl 2 stroke 180hp Detroit diesels.  Both engines rebuilt in last 8 years.

Single lever Morse controls to Borg Warner 2:1 hydraulic gearboxes.  Stainless shafts to 3 blade bronze propellers supported by bronze P-brackets.

12 knots economical cruising, 22 knots max.

Small bronze spade rudders with hydraulic operation from wither the inside or outside helm position.

Both engines have been professionally rebuilt are in very smart condition.  The engine room appears generally smart and well organised.



2 x 500l stainless steel fuel tanks port and starboard under the wheelhouse with water separator fuel filters.

2 x 450l stainless steel water tanks under the saloon cabin sole.



4 x 12volt batteries, split between engine starting and domestic with charging from the engine alternators.



Sliding entrance doors either side into the wheelhouse.  Port side helm position with helmsman seat, superb visibility all round.  Extra seating to starboard and either side at the aft end of the wheelhouse.

Centreline entrance to the aft cabin with steps down.  Port side double berth and starboard single with large hanging locker and storage area in the aft against the transom.  Aft heads is just forward of the aft cabin entrance to starboard with the shower compartment to port.

Centreline steps down from the wheelhouse into the main saloon with large port and starboard settee berths and a centreline drop leaf mahogany table.  Saloon is finished with gloss white bulkheads and varnished mahogany trim and cabin doors.

Full standing headroom throughout.  Hot air heating.

L-shape galley at the forward starboard end of the saloon with a 2 burner gimballed gas stove and oven.  Single stainless sink gravity drains overboard

Gas fired hot water heating provides pressurised hot water to heads and galley.

Heads compartment at forward port hand side of saloon cabin.

Forward cabin with twin V-berths and ample storage.



Steering compass inside and out


Garmin GPS

JRC 1500 radar

Auto pilot



Horse shoe lifebuoy

Flare pack

5 x fire extinguishers


2 x anchors

Ample chain and warp

Electric windlass

Avon 9’ dinghy

Johnson 4hp putboard

Mooring warps





These particulars have been prepared in good faith from information provided by the Vendors and are intended as a guide, Wooden Ships cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. The Purchaser should instruct his agent or surveyor to validate all details as necessary and satisfy himself with the condition of the vessel and its equipment.


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