What this does is allow you to essentially wipe out a ship full of Horde or Alliance using only a DK with Path of Frost. With this you can send the enemy straight to the graveyard, where it'll be easy to camp and kill them. Also great for taking them by surprise as they're suddenly assaulted by their foes they thought were a minute away.
Just run to the water as fast you can and run directly at the ship while in motion. You'll glitch through, into the deck right below the unsuspecting Horde!
Here's an example video demonstrating that it indeed works.
[ame=http://www.youtube.com/watch?v=Zyloy2n7R6s&feature=channel_page]YouTube - Storming the Ships in SotA[/ame]