2025 Williams Jet Tenders Dieseljet 505

The Williams Dieseljet 505 is a 16.5-foot jet tender built on the proven platform of its smaller sibling. Powered by a Yanmar 4JH turbocharged diesel engine producing 110 horsepower, it reaches speeds of approximately 35 knots and accommodates eight people. The jet propulsion system allows direct refueling from the host yacht's tanks.

The boat features teak decking as standard, along with a removable water ski mast, a deep telescopic swimming ladder, and dual boarding steps for easy access between the tender and a larger vessel. A hardwired GPS navigation system is included. The hull is finished in white and grey with white vinyl seating, delivering both functionality and visual coherence.

This 2025 model includes navigation lights, a flag staff, and the standard equipment package. The jet tender's combination of diesel efficiency, accessible accommodations, and sports capability makes it versatile for passenger transport and water activities alike.