I-27 was a submarine of the Imperial Japanese Navy which saw service during the Pacific Campaign of World War II.

On June 4, 1942, Iron Crown while en route Whyalla-Newcastle was torpedoed and sunk 44 miles SSW of Gabo Island by I-27.

The turbine engines of this ship were later salvaged and used to propel the Great Lakes freighter Kinsman Independent.

[9] A burst of machine-gun fire was heard by the survivors, but its reason is unknown as Scurr was eventually freed from Changi prison camp at the end of the war.

[10] The submarine torpedoed and sank the Allied steamship SS Khedive Ismail near the Maldives on February 12, 1944, killing 1,297 passengers and crew.