Grander Weight Angler Location Date Blue Marlin 1350 Harry Grace Jr. Milolii, Hawaii 06/18/77 This fish was weighed minus its tail and guts. It was conservatively estimated to weigh 1400 to 1500 lbs when whole and had to be cut into pieces in order to transport it. The marlin attacked a chrome-headed lure rigged on 80-lb test line. Capt. Harry Grace’s boat, the PAUL KAI ALII ALII II, was a 19-foot skiff. The fish measured 20 feet in length.