145310 was a pre-Second World War passenger steamer built by Vickers Armstrong at Barrow-in-Furness in 1936, for service with the Isle of Man Steam Packet Company.

Both Tynwald and Fenella were designed with a service speed of 21 knots, accommodation for a crew of 68, and certificated to carry 1968 passengers.

Whilst the twins were identical in almost every facet, there were two subtle differences incorporated into their external appearance so as to be able to differentiate between the two.

The first class dining saloon of the Fenella consisted of English chestnut, whilst on the Tynwald the woodwork was Queensland walnut.

[2] Both ships worked on the heavy seasonal traffic on the main Douglas-Liverpool route, and both were much appreciated by passengers, especially in winter weather.

With large public rooms, both twins were furnished to a high standard, and apart from slight decorative differences, they were of similar external appearance, except that Tynwald had her upper strake painted white, whereas on Fenella it was black.

On Tuesday 16 November 1937, a storm, with associated south-easterly gales, forced Fenella to seek shelter on the protected western side of the Isle of Man near Peel.

[3] That same day, her sister Tynwald also had problems trying to berth in Douglas,[3] which before the construction of the Princess Alexandra Pier in 1984, was particularly hazardous during strong easterly winds.

[4] On Tuesday 17 January 1939, whilst lying at anchor in the River Mersey, having taken the sailing from Douglas to Liverpool, Fenella was run into by a cargo ship, the SS Eastleigh, which had arrived from Karachi, and was proceeding to berth at Bromborough Dock.

She started to embark troops from the East Pier, and had 650 on board when she came under heavy fire in the third massed air attack of that day.

The troops were disembarked onto the pier, where they were picked up by HMS Crested Eagle, the famous old London pleasure steamer.

The German surgeons did an expert job on him, and he was repatriated before the end of the war, and eventually rejoined the Steam Packet.

Operation Dynamo, whilst widely regarded as the Steam Packet's "finest hour",[6] also saw its blackest day.

She was taken over by a Kiel shipping firm in 1943 under the name of Rival, only to be completely destroyed in the massive RAF air raid on Hamburg on the night of 31 December 1944.