High Quality Content by WIKIPEDIA articles! The SS Koombana was a coastal passenger and cargo steamship which sank at an unknown location north of Port Hedland, Western Australia during a cyclone on 20 March 1912 with the loss of approximately 138 lives, including 20 crew. Other than some floating wreckage, no trace was ever found of the ship, which was presumed sunk along with several other vessels during the same storm. A further 11 people died in other ships and near the cyclone.