Mortar vessel 7, 1855
Type: Mortar vessel ; Armament 1
Launched : 5 May 1855 ; Disposal date or year : 1875
BM: 117 tons
Propulsion: Sail
Notes:

1855 Bombardment of Sveaborg.

Oct 1855 Mastiff renamed Mortar vessel 7.

1864 Renamed Watch Vessel 37, Coastguard.

1870 Watch Vessel 37, Coastguard - Tilbury.