INDOMITABLE was built by Richard Dunston at Hessle in 1979, YN 916
1979: Alexandra Towing Co
1993: Howard Smith Towage
1999: Adsteam
2007: Svitzer AS, Copenhagen
2007: Svitzer Africa (Pty), Cape Town
2009: GPS Marine Services BV; renamed HIBERNIA
2009: Niarcos Shipping, Gibraltar (GPS Marine, managers)
2014: GPS Marine Services BV; renamed GPS CHALLENGER
2014: Woongin Development SA, South Korea; renamed WJT-3500