46ft Watson-class lifeboat
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- Groves & Guttridge, Cowes
- Alexander Robertson & Sons, Sandbank, Argyll
- J. Samuel White, Cowes
- Sussex Yacht Co., Shoreham
- Morgan Giles, Teignmouth
- Rowhedge Ironworks, Rowhedge
Julia Park Barry of Glasgow (ON 819) at Admiralty Gateway / Peterhead Prison Museum, 2019. | |
| Class overview | |
|---|---|
| Name | 46ft Watson-class |
| Builders |
|
| Operators | |
| Preceded by | 45ft 6in Watson-class |
| Succeeded by | 46ft 9in Watson-class |
| Cost | £7,308–£17,048 |
| Built | 1935–1946 |
| In service | 1935–1981 |
| Completed | 28 |
| Lost | 2 |
| Retired | 26 |
| General characteristics | |
| Class & type | 46ft Watson motor lifeboat |
| Displacement | 21 tons |
| Length | 46 ft (14 m) |
| Beam | 12 ft 9 in (3.89 m) |
| Propulsion |
|
| Speed | 8 knots |
| Crew | 8 |
The 46 ft Watson-class was a non-self-righting displacement hull lifeboat, built between 1935 and 1946, and operated by the Royal National Lifeboat Institution (RNLI) between 1935 and 1981.
The 46 ft Watson initially had an aft cockpit with a shelter containing the engine controls. Ahead of the shelter was the exhaust funnel and ahead of the mast was a small forward shelter. On ON 805 and 815, the cockpit shelter was lengthened, with the funnel mounted on its forward end and these two featured end boxes. ON 820 also had the lengthened shelter but retained a flush deck. From ON 828 the forward shelter was deleted. Two boats, ON 840 and ON 846 had midships cockpits, ahead of the funnel, with a shelter ahead of it as well as the rear shelter.
Four of the first five boats had two 40-bhp Weyburn CE4 4-cylinder petrol engines, but the fourth, ON 787, was fitted with two 40-bhp Ferry VE4 4-cylinder diesels, making it the first RNLI lifeboat to be built with diesel engines. The diesels became standard from the sixth boat onwards.[1]
In the mid sixties, seven boats were re-engined with 65-bhp Ford-based Parsons Barracuda 6-cylinder diesels, after trials with Canadian Pacific (ON 803), which had been fitted with 47-bhp Parsons Marlin diesels in 1961, and then re-engined a second time, with the Parsons Barracuda in 1963.[1]
The 46 ft type was one of the last to be adapted to suit the conditions at individual stations, with shallower draft versions (ON 805, 815, 820 and 838) being supplied to four stations, all constructed by J. Samuel White of Cowes. This practice ceased after World War Two, with lifeboats constructed to standard designs.[1]
The 46 ft Watson-class lifeboats were long-lived, most reaching more than thirty-years-service and some topping forty years.[2]
Boat-builders yard fire
On 18 June 1937, a fire at the boatbuilders yard of Groves and Guttridge in Cowes on the Isle of Wight destroyed three lifeboats, and a large quantity of timber. A fourth lifeboat had fortunately been dispatched to Blackpool only 15 hours earlier. The fire completely destroyed the 46 ft Watson-class S. G. E (ON 787), built in 1936, which had been returned to the manufacturers for maintenance work.[3]