thunder , one of six vessels known to illegally fish vulnerable toothfish in the southern ocean , sunk off the coast of africa ` started applauding and cheering ' when his vessel was entirely submerged .
crew aboard sea shepherd vessel bob barker , which had been pursuing the ruined vessel named thunder for 110 days in an effort to stop alleged activities in antarctic waters .
thunder 's sinking is believed to be another deliberate move by the vessel to hide evidence of any illegal gillnet that