v/H.Larsson-Fedde.
5/1977: K/S Sverre Ditlev-Simonsen Drilling A/S,Oslo - VILDKAT
12/1981: P/R Vildkat(Sverre Ditlev-Simonsen Drilling A/S)Oslo - VILDKAT
7/1985: K/S Sverre Ditlev-Simonsen Drilling A/S,Oslo - VILDKAT
6/1989: K/S Sverre Ditlev-Simonsen Drilling II A/S,Oslo - VILDKAT
11/1990: K/S Vildkat Explorer(Ross Offshore A/S)Oslo - VILDKAT EXPLORER
6/1991: K/S Vildkat,Oslo - VILDKAT EXPLORER
5/1993: Ross Offshore A/S,Oslo - VILDKAT EXPLORER
/1994: Transocean A/S,Tananger,Oslo - VILDKAT EXPLORER
7/1996: omdøpt - TRANSOCEAN WILDCAT