About this tender
The JT 16 is the Castoldi we recommend most often for owners with motoryachts in the 35m to 45m bracket. At 5.08m LOA and 2.08m beam, the boat sits comfortably in standard mid-size tender garages, carries eight guests at coastal certification, and runs cleanly with a single Yanmar 4JH110 marine diesel coupled to a Castoldi waterjet. The combination of size, capacity and driveline reliability is the reason this is one of the best-selling models in Castoldi's range.
The hard-chine deep-V monohedric hull is purpose-developed for waterjet propulsion, with 22-degree deadrise at transom and integrated spray rails. 0.38m diameter Hypalon tubes give a sensible balance of buoyancy and stowed footprint. Top speed sits comfortably in the low 30 knots, which is the right operating envelope for a guest tender that prioritises ride quality over outright performance.
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Highlights
The four details we'd point out first to a captain who hasn't seen one on the water yet.
Single Yanmar 4JH110 marine diesel at 110 mhp at 3,200 rpm coupled to a Castoldi waterjet. Yanmar's parts and service network is global; the JH110 is one of the most widely-fitted small marine diesels and spares are straightforward to source. Service intervals are predictable, which matters for crew planning.
The 22-degree deadrise hard-chine deep-V hull is designed specifically for waterjet propulsion rather than adapted from a propeller-drive shape. Spray rails and tube geometry give a dry ride at coastal cruise speeds and predictable handling at low-speed manoeuvring on the waterjet.
At 5.08m LOA and 2.08m beam, the JT 16 fits inside the tender envelope on most 35m to 45m motoryachts that have been built to carry an eight-passenger guest tender. The footprint matches the most common production tender lift sizes, which is the reason this is a high-volume seller in the Castoldi line.
Eight-passenger Cat C certification is the operational headline, and unlike the smaller models in the range the deck genuinely supports the count for working shore runs. For larger guest groups, look at the JT 18 or 19; for smaller yachts where the JT 16 is too big, look at the JT 14 or 15.
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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
Castoldi · Albairate, Italy
Tell us about your yacht, your programme, and the missions 16 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
From the library
