2025 Williams Jet Tenders Dieseljet 505

The Williams Dieseljet 505 is a 16.5-metre jet tender powered by a single Yanmar 4JH turbodiesel engine producing 110 horsepower. Built from fiberglass, the boat reaches speeds of approximately 35 knots and can accommodate eight passengers. The jet propulsion system allows direct refueling from the parent yacht's tanks, simplifying logistics for extended cruising.

The 505 combines practical design with thoughtful detail. Teak fittings come standard, along with GPS navigation, a removable ski tow mast, a deep telescoping swim ladder, boarding rail, and two boarding steps to ease transfers between the tender and main vessel. The boat is fitted with a Classic tubular rail, white vinyl seating, VHF radio, navigation lights, and deck lighting.