Kaikō Maru
Kaikō Maru was the spotter ship for the Japanese whaling fleet. In 2007, it collided with the Sea Shepherd Conservation Society vessel MY [Steve Irwin|MY Robert Hunter] and was disabled. It sent out a mayday and Robert Hunter,, and were obliged to respond until Kaiko Maru was repaired.
It was sold in 2013 to Specialised Vessel Services as a patrol vessel and renamed as SVS Frobisher.