Built: 1913, Newcastle-upon-Tyne, England
Builders: Swan, Hunter and Wigham Richardson Ltd.
Official Registry Number: 133535
Dimensions:
Length: 55.7 metres (181'9'')
Breadth: 10.19 metres (33'7")
Depth: 5.79 metres (19'1")
Tonnage: 846 gross registered tons
Boats: 2 gasoline survey launches (during some periods, 4), 2 cutters/lifeboats
Crew: 51
Hydrographic staff: 15
Engine: Triple expansion
Cylinder diameters: 43.18 cm (17"), 71.12 cm (28"), 1.17 m (46")
Stroke: 65.58 cm (27")
Horse power: 1715
Top speed: 12.5 knots
Boilers: Scotch, Forced draft
Working pressure: 185 psi.
Diameter: 3.41 metres (11'3")
Length: 3.48 metres (11'6")
Wartime Armament
1917-1919: 1 x 4" Gun, 2 x 12 pounder guns
1939-1945: 1 x 4" Gun, 1 x 2 pounder AA gun & 8 depth charges