Stormreaver Bay is the name of the body of water in between the Broken Isles.
This natural bay between the southwestern islands boasts a bit of history. Gul’dan anchored his ships here when he was exploring the isles. The ships are long smashed, but their remains still drift in the aptly-named Stormreaver Bay. ( )
It is filled with the wreckage of the ill-fated fleets of the Stormreaver Clan, and presumably the Twilight's Hammer Clan as well. The ships were destroyed along with the clans by Doomhammer, after Gul'dan's betrayal.
The Warcraft III map shows this as "Stormreaver Wreckage".