Guild Wars 2

I’m a the point where you have to shoot the Warmonger ship with the trebuchet however when I click on #2 I get an error message that says “You cannot fire in that direction”. The treb is aimed at the ship. I’ve left the story and came back in still receive the same error. I’ve tried to use the treb farthest away and it will not let me use that one even though get the option to use.

Just swim out and kill the ship with your harpoon gun/spear/trident and move on. I couldn’t get the trebuchets to act right either.