Iron Man, Vol. 1 #93 (1976)

Kraken Kills!
After a space rescue equipment test goes awry, Iron Man finds himself aboard a ship at sea. When Krissy Longfellow and Abe Klein come out to meet him, they all are in for a surprise; Kraken the pirate has laid traps for them all, luring Iron Man down to his underwater base where he finds captured Krissy and Abe used as hostages to get Iron Man to do as Kraken wishes.
Release Date: 1976