The tanker i was on was built long before WWII we had a old 5in.Useing powder bags also we had 2 58 caliber machine guns on the bridge wings water cooled ship name ss fq barstow it was really a rust bucket.The next one ss kenyon tanker new one 5in38 on stern 3in50 on bow and 4 20mm.Last ship ms square knot small freighter3/50 on stern 4 20 mm