[10] After her African refit, Bob Barker departed Mauritius on 18 December 2009 to join up with the MY Steve Irwin and MY Ady Gil, the two other Sea Shepherd vessels.

[11] One of its first actions was to take video footage of the collision between Ady Gil and a Japanese security vessel, after which she took aboard the crew from the stricken Sea Shepherd craft.

[17] On 18 February 2011, after being aggressively tailed by Bob Barker for over 3,000 nmi (5,556 km), Nisshin Maru changed course and headed towards Japan, cutting short the 2010–11 whaling season.

[18] On 5 March 2012, Sea Shepherd reported that after a lengthy search Bob Barker found the whaling fleet's factory ship, Nisshin Maru.

[20][21] On 20 February 2013, the Japanese whaling ship Nisshin Maru rammed Bob Barker, MY Sam Simon, Steve Irwin and Sun Laurel multiple times in a confrontation in the Southern Ocean, north of Australia's Casey Research Station in Antarctica.

[23] Following repair from damage, January to March 2014 saw the MY Bob Barkers embark on Operation Relentless - its last Southern Ocean mission, with a total of 99 days at sea.