145307), was a passenger ship, built by Vickers Shipbuilding and Engineering for the Isle of Man Steam Packet Company at Barrow-in-Furness in 1930, at a cost of £249,073.

Certificated to carry 2,873 passengers and 81 crew, she was commissioned to operate on the Island's busy Douglas–Liverpool and Douglas–Fleetwood routes, and had a maximum speed of 23 knots.

The year 1930 saw the Isle of Man Steam Packet Company celebrate its centenary, and to mark this, Lady of Mann was to be the largest ship ever built for it to that date.

Lady of Mann's general design and machinery followed closely that of the Ben-my-Chree, with the improvements gained by the three years operation of that vessel.

(Daddy) Woods O.B.E., Lady of Mann joined seven of her Steam Packet sisters at Dunkirk and then at the evacuation of the north-western French ports.

Requisitioned as a personnel ship at the outbreak of war, she had a good turn of speed, and was able to get in and out of the Dunkirk bombardments and lift 4,262 men back to the relative safety of Dover and Folkestone.

She remained for six hours in Dunkirk harbour on 31 May 1940, despite having been damaged by shellfire from shore batteries on her approach and being bombed by enemy aircraft.

The following day, 2 June, she again steamed into Dunkirk but was ordered back for lack of troops, as by this time the evacuation was drawing towards its close.

She berthed alongside the East Pier at a little after midnight on the morning of 4 June, and left for England after embarking another 1,244 troops in little over an hour.

[7] Another operation which the Lady of Mann was assigned to was that of ferrying forces personnel from RMS Queen Mary, which served throughout the war as a troop transport ship.

Lady of Mann was one of several vessels that undertook this important task, taking troops on the final leg of their sea voyage to Greenock.

On D-Day, 6 June 1944 as part of Operation Overlord, Lady of Man was the headquarters ship of the senior officer of the 512th Assault Flotilla, responsible for the landings in the Juno area near Courselles.

She was reconditioned by Cammell Laird & Co at Birkenhead and after her proud war service, Lady of Mann returned to her duties with the Isle of Man Steam Packet Company on 14 June 1946.