Ship
A boat that's white isn't just a boat, it's a ship.
Boats don't need to be a bright white color. But, ships do! They're dangerous and big, so they paint them nice and white.
はく
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A white-painted ship is a kind of hack (はく). It makes the ship more visible without costing much.
You can also imagine hacking the ship's computer. "Look at me, look at me. You are the hacker now."