...and now you know why this isn't a thing.

Timing matters.

Hop on to enemy ship with storage crate.

Instantly load up all their planks.

Drop storage crate in sea.

Watch as they inevitably sink as they got no resources.

????????

PROFIT!

So make it easier for other crews to loot your resources as well?

Nah.

I think a better idea is that when holding a crate, interacting with barrels or other crates allows you to transfer between the two storage units without using the player inventory. Primary fire transfers maximum player inventory size at a time (ie: 10 cannon balls per click, 5 wood per click, etc). And secondary click transfers one item at a time.

So for example if you hold an empty cannon ball crate and interact with a barrel, you can fill the cannon ball crate with five clicks.