Scillonian III — Passenger and cargo vessel purpose built in 1977 by Appledore Shipbuilders Ltd, Devon.
Refitted in 2013.

Gry Maritha — Cargo vessel built in Norway and acquired in 1989.
The replacement vessel, Mali Rose was bought in 2016 but found unsuitable.
The Gry Maritha, following three years of sporadic service when the Mali Rose was out of service, returned as the main cargo carrying vessel for the steamship company in May 2019.

Lyonesse Lady — Inter-island launch, purpose built in 1991 by Lochabar Marine Ltd. to replace the MV Gugh (see below).

Swift Lady — Inter-island RIB, purpose built in 2004 by Redbay Boats, Northern Ireland.

Island Lady — Cargo vessel built in 1986 as a MOD tank landing craft and acquired by the ISSC in 2007.
Is 90 ft long with a 22 ft beam and capable of carrying 100 tonnes of cargo.
Scillonian III — Passenger and cargo vessel purpose built in 1977 by Appledore Shipbuilders Ltd, Devon. Refitted in 2013.
Gry Maritha — Cargo vessel built in Norway and acquired in 1989. The replacement vessel, Mali Rose was bought in 2016 but found unsuitable. The Gry Maritha, following three years of sporadic service when the Mali Rose was out of service, returned as the main cargo carrying vessel for the steamship company in May 2019.
Lyonesse Lady — Inter-island launch, purpose built in 1991 by Lochabar Marine Ltd. to replace the MV Gugh (see below).
Swift Lady — Inter-island RIB, purpose built in 2004 by Redbay Boats, Northern Ireland.
Island Lady — Cargo vessel built in 1986 as a MOD tank landing craft and acquired by the ISSC in 2007. Is 90 ft long with a 22 ft beam and capable of carrying 100 tonnes of cargo.
Isles of Scilly Steamship Company