- Stock #228754 - Custom built ultimate fishing/expedition vessel. Complete hull refit including new custom aluminum house/decks in 2018, and much more! 1970 Custom Bertam 35 Mark II This is a custom built fishing, charter, or expedition vessel! Rigged to power troll, long line, charter Easy conversion to a dive boat. She is built on a Bertram 35 hull, the superstructure and deck are made of aluminum, and the hull is fiberglass. She has a walk-around deck. Powered by twin inboard Cummins QSB 5.9L 425 HP per side. At 2250 RPM she burns 22/24 GPH at 22/ 24 knots depending on the amount of... read more