About Castoldi
The company's waterjets made their name in powerboat racing in the 1970s and are used by military and law-enforcement fleets, including Italian government agencies. The first Castoldi Jet Tender, the JT 18 PRO, followed in 1998, combining a rigid inflatable hull with an inboard diesel engine and the company's own jet unit.
The range has since grown to cover compact owner tenders, SOLAS-approved rescue boats and larger guest tenders. In 2025 Castoldi moved into limousines with the Jet Tender 34 Limo, designed with Nauta Design, a 10.5-meter enclosed tender that combines bespoke finishing with semi-series production.
Tender types
- Diesel jet tenders
- SOLAS rescue tenders
- Limousine tenders
- Crew and service tenders
Castoldi's jet tenders pair inboard diesel engines with the company's own waterjets, which is why the brand is favored where safety and diesel-only fuel policies matter.
Models and range
- JT 14 to JT 19Compact jet tenders for owners and crew, suited to garages and deck cradles on mid-sized and large yachts.
- RB/SOLAS versionsSOLAS-approved rescue variants of the JT 14, JT 18 and JT 19 for yachts that need a certified rescue boat.
- JT 21 to JT 28Larger open jet tenders for bigger guest parties and service runs.
- JT 34 LimoA 10.5-meter enclosed limousine designed with Nauta Design, the first Castoldi limousine.
Applications for superyachts
Waterjet propulsion removes the exposed propeller, a real advantage around swimmers and on beach landings, and allows the tender to turn on its own axis and stop quickly. Diesel power also means no gasoline stored aboard the mother yacht, a point that captains, flag states and insurers take seriously on larger yachts. Compact dimensions make the smaller models easy to fit into garages and deck cradles.
On a large yacht a Castoldi often works alongside a limousine: the limousine handles formal guest arrivals, while the jet tender covers crew runs, watersports support and rescue duties. The new JT 34 Limo lets owners who prefer waterjet handling extend that approach to the enclosed guest tender as well.
Why owners choose Castoldi
Owners and captains choose Castoldi for its long waterjet expertise, diesel-only propulsion, SOLAS-approved options and a reputation for reliable, easily handled tenders.
Available tenders
Tenders are usually specified to order, and pre-owned examples tend to change hands quietly, often together with their mother yacht. Daniel does not hold tender inventory; on request he can approach Castoldi or its representatives, and search the pre-owned market, for a tender that suits your yacht.
Work with Daniel Grant
Daniel can help owners and captains decide where a Castoldi jet tender fits within the yacht's tender plan, alongside a limousine or chase boat, and help locate new or pre-owned models. He acts independently for the owner and is not a Castoldi dealer. Other specialist builders appear in the tenders directory.
A tender is often one part of a larger decision. Daniel can also help you find the right yacht, guide a new build from brief to delivery, or compare the yacht builders behind the mother yacht. To talk it through, contact Daniel directly.