About this tender
The DieselJet 565 is the Williams tender we specify when the mothership sits at 35 metres or above and the owner's programme calls for a diesel-powered jet drive rather than a petrol outboard or sterndrive. At 5.71m overall with a beam of 2.41m, it carries nine passengers in a layout that prioritises seating comfort and boarding ease without inflating the envelope beyond what a competent tender garage can accommodate.
The engine choice is a Yanmar 4LV producing 195hp, driving through a jet pump rather than an exposed shaft or drive leg. That architecture removes underwater appendages entirely, which simplifies berthing alongside a swim platform and reduces the risk profile when operating in shallow or debris-strewn water. Williams quote a top speed of up to 71 kph; the more relevant figure for a typical programme is the reliability and low-maintenance character of the Yanmar four-cylinder diesel across a full season.
The folding helm and windscreen are the detail that earns the 565 its place aboard yachts with tight garage clearances. In low-profile configuration the overall height drops from 1.59m to 1.18m, which opens up fitment options that a fixed-helm tender of similar length would close off. Standard fit includes a Raymarine Axiom 7-inch MFD with depth sounder and chartplotter, FlexiTeek decking, four-point lifting pad-eyes, and a removable hypalon tube with boarding step pads. The options list extends to AIS, a Fusion audio system, single-point lift, underwater lights, and MCA-compliant high-visibility patches for programmes that require them.
Highlights
The four details we'd point out first to a captain who hasn't seen one on the water yet.
The helm console and bonded windscreen fold down, reducing overall height from 1.59m to 1.18m. For yachts where tender garage clearance is tight, that 410mm reduction is often the difference between a workable fitment and a boat that simply does not go aboard. An optional single-point lift complements the low-profile capability.
The Yanmar 4LV 195hp diesel paired with a jet pump delivers fuel economy and torque characteristics that a petrol outboard cannot match over a full Mediterranean season. The absence of an underwater drive leg simplifies shallow-water manoeuvring and reduces haul-out maintenance between charters or passages.
The 565 seats nine persons in a layout supported by leg bolsters, abundant handholds, and multiple boarding points with gripped step pads. Williams have engineered the centrally mounted engine and inflatable tubes to sit low, keeping the centre of gravity down and the seating area clear for practical use rather than merely theoretical headcount.
A Raymarine Axiom 7-inch MFD incorporating depth sounder and chartplotter is fitted as standard, alongside plug-in navigation lights. An additional 9-inch chartplotter and AIS are available as options, giving captains a sensible upgrade path without the cost of specifying equipment that every programme may not require.
Williams offer twelve tube colour schemes, custom upholstery and moulding colours, yacht name branding on tubes and upholstery, and an illuminated aft name panel. Functional options include a Fusion Bluetooth audio system, fresh water shower, underwater lights, shore power, and MCA-compliant high-visibility patches for commercially operated yachts.
Gallery
The full specification
Specifications, prices, availability, and performance figures are supplied for guidance only and remain subject to confirmation by the yard, seller, broker, survey, contract, and final specification.
Questions, answered
Last call · Available
Williams · Oxfordshire, UK
Tell us about your yacht, your programme, and the missions DieselJet 565 needs to handle. We come back within 48 hours with a written assessment - fit for the brief, lead time, and trade-offs against alternatives in the same band.
Prefer to talk? +44 (0) 77180 88055 · other ways to reach us
