|Information about the vessel may be found at IMO 5139234.
A ship can change her name and flag state through time, but the IMO number remains the same through the hull's entire lifetime. Therefore, it's useful to identify a ship through her IMO number.
Standby Vessel '''SVERDRUPSON''' Flag: Norway IMO: 5139234 Length: 32.30 m Beam: 7.45 m Draft: 3.70 m GRT: 227
Deutsch: Das Baujahr wird in einigen Foren mit 1960 angegeben. Der Sohn des ersten Eigners schreibt in einem norwegischen Forum es muss 1969 gewesen sein.
English: According Norwegian Maritime Directorate’s vessel database  and forums the year of construction is given with 1960. The son of the first owner wrote in a Norwegian forum it must have been 1969. The vessel was built in 1960 at Ørens Mekaniiske Verksted in Trondheim, Norway, as number 26 and named H.U. Sverdrup (http://www.skipet.no/skipsbygging/stalskipsverft/orens-mek-verksted-trondheim).