- Builder
- Kanagawa Shipyard
- Build year
- 1964
- Previous names
- Po Toi, Taikoo Ann, Ruth B, Ruth M, Tsukuba maru
- LOA (m)
- 28
- Beam (m)
- 7.6
- Maximum draught (m)
- 3.6
- Gross tonnage (GT)
- 161
- Build country
- Japan
- Completion date (source)
- 1964-01-01
- Decks
- 2
- Hull type
- Mono hull
- Hull configuration
- Displacement
- Hull materials
- Steel
- Superstructure materials
- Steel
- Naval architects
- Kanagawa Shipyard
- Exterior designers
- Kanagawa Shipyard
- Cruising speed (source; unit unspecified)
- 9
- Reported guest count (accommodation unverified)
- 8
- Crew size
- 6
- Flag
- United Kingdom
- Engine manufacturers
- Nippon Hatsudaku
- Engine models
- Nippon Hatsudaku
- Engine types
- Unknown
- Engines
- 2
- Engine power (kW, source)
- 584
- Engine power (HP, source)
- 783
- Propulsion
- propellers
- Propulsion count
- 2