This was the boat belonging to Ka'len, on which he famously died in 232 BL. Dolfaren in Old Gamgweth means "Victory". The ship, a brigantine, sank in the Segoltha Sea after being ambushed by five Elven warships, two of which went down as well.
The Brigantine is a named constellation looked to by Moon Mages. Legend says that in a time of great storms, a single star (appropriately called the Dolefaren star) will shine brightly from what would be the masthead of the great ship.
The ninth month is named after her - the 9th month of Dolefaren the Brigantine.