About this tender
The JT 25 is the size we recommend for owners on motoryachts in the 65m to 80m range who want a serious guest tender that can carry up to sixteen passengers without compromise. At 7.5m LOA and 2.6m beam, it sits in the same beam class as the JT 21 but is meaningfully longer, with the deck volume and waterline that brings. The Yanmar 4LV250 diesel coupled to a Castoldi Turbodrive 284 H.C.T. waterjet delivers 38 knots top speed in light-load configuration and 35 knots fully loaded.
Sixteen-passenger Cat C certification is the operational headline. For yachts with regular charter programmes or large guest groups, this is often the right size to reduce shuttle frequency and improve guest experience. Build standard, hull material and tube construction are consistent with the rest of the Castoldi range; the difference is in the size envelope and the Turbodrive 284 waterjet, which is the larger waterjet variant matched to the higher hull weight.
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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.
Yanmar 4LV250 marine diesel at 250 hp running at 3,800 rpm, paired to a Castoldi Turbodrive 284 H.C.T. waterjet with hydraulic clutch, movable grid and Clear-Duct unclogging. Top speed is 38 knots light, 35 knots fully loaded. The driveline is sized for the boat's weight and design intent.
Cat C certification supports sixteen passengers, with the deck layout to back this up. The 7.5m LOA gives genuine space for the full passenger count without crowding, which is the operational reason owners step up from the JT 21 to the JT 25 on yachts hosting larger guest groups.
7.5m LOA and 2.6m beam matches the standard tender envelope for motoryachts in the 65m and above range. For owners on a refit or new build looking to step up tender capacity, the JT 25 is often the right answer between the JT 21 and the much larger JT 28 or 34.
Built in Castoldi's factory near Milan with full in-house process control. Hand-laid Kevlar and vinylester laminate hull; sandwich-construction deck and console; in-house waterjet manufacture. Build consistency is at the top of the production tender market and supports straightforward insurance and class society acceptance.
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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 25 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
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