- Stock #446734 - Willard Sea Force 730, 24' with Cummins 5.9L 250 HP engine and trailer included. For sale: A Willard Marine Sea Force 730 rigid inflatable, a rugged vessel perfect for both professional and recreational use. Equipped with a powerful 250 HP Cummins engine and a Hamilton jet drive, this boat offers impressive performance and agility for smooth navigation in both calm and rougher waters. The Garmin Echomap SV offers fishfinding capability, as well as GPS and chartplotting. There's a windlass to make raising anchor a more manageable task, including an anchor locker in the ... read more