[Yo-Yo]

How do you hija[c]k a ship?

Mostly, they use Rocket Propelled Grenades (RPGs) to threaten to punch holes in the side of the ship. RPGs are Soviet era antitank weapons, and are easily capable of penetrating the steel sides of even the largest ship.

[Bill Dupray]

I think Mr. K may mean how do you finish hijacking a ship. The threatening to blow the thing up part gets you on pretty easily. The exit strategy is a bit more . . . challenging.