Naval Annual Days Den Helder 14 July 2007
Netherlands-flagged, research/survey vessel Arca, built in 1998, IMO 9167966, MMSI 244454000 and callsign PDHT.
Netherlands-flagged tug Waker, launched at Verolme Scheepsbouw, Heusden, Netherlands on 11 December 1976 and handed over to Smit International Zeesleep- en Bergingsbedrijf, Rotterdam, Netherlands, IMO 7522124. Registered 1986 at Nassau, Bahamas and Bahamas-flagged of Smit Tak International Ocean Towage Co.BV. August 1989 handed over to Greenpeace and renamed Solo with a gross register tonnage of 2.167 tons and a net register tonnage of 650 tons due to a rebuilding
Ex-Smit Houston of Svitzer Ocean Towage BV renamed 1990 and Solo renamed July 1995, lost by fire in 2009 and broken up in 2010. Gross register tonnage 1.826 tons, net register tonnage 306 tons and as dimensions 58,73-67,54 x 14,51 x 6,235 x 6,91 (depth) metres. Between 2005-2007 of URS Salvage&Maritime Contracting NV, Antwerp, Belgium. In 1995 chartered by the Dutch Coast Guard.