Maneuvering into position at 02:45, Sealion fired six bow torpedoes at Kongō followed by three stern torpedoes at Nagato fifteen minutes later.
Efter at kommet i stilling kl. 2.45 affyrede Sealion seks bov-torpedoer mod Kongō efterfulgt af tre after-torpedoer mod Nagato femten minutter senere.