Kaikō Maru (海幸丸; now SVS Frobisher) was the spotter ship for the Japanese whaling fleet. In 2007, it collided with the Sea Shepherd Conservation Society vessel MY Robert Hunter and was disabled.Japanese whaler, anti-whaling ship collide , China Economic Net, February 15, 2007 It sent out a mayday (call for help) 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.
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