The black, you can't really see this, but these are Norwegian basking shark hunting vessels, and the black line in the crow's nest signifies this is a shark vessel rather than a whaling vessel.
这艘黑色的，你们可能看不清，但是这些都是挪威人用来捕杀姥鲨的船只 望台上的黑线 表明这是一只猎杀鲨鱼的船只 而不是捕鲸的船只