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Prestige yacht problems: what to check on a used Prestige

UPDATED 8 NOVEMBER 2026 · 3 FINDINGS · 1 SOURCES

Known problems on used Prestige motor yachts and where to look: cracking in the cored hull where the boat was stored badly on chocks, delamination, Cummins engine servicing, and the electronic control boxes and cabling.

AT A GLANCE
Prestige
BUILDER
Prestige Yachts, a French builder of flybridge and sports motor yachts
COVERS
Prestige 420 Fly with shaft drives, from Motor Boat & Yachting's used boat report
DOCUMENTED BY
Surveyor Chris Olsen's report in Motor Boat & Yachting
CHECK FIRST
Repairs and cracks on the undersides where the boat sat on chocks; hammer sounding for delamination; engine cooling and anodes; electronic control boxes

Prestige builds family flybridge yachts. Motor Boat & Yachting's used boat report on the Prestige 420 Fly, the shaft-drive version that replaced the earlier IPS boat, includes a surveyor's list from Chris Olsen.

Cored hull: storage on chocks

The 420 Fly's hull is cored. Olsen asks buyers to inspect the undersides carefully for signs of repair, particularly where the boat has been lifted and stored on chocks, because cored hulls can be prone to cracking if stored badly. He also asks for the undersides to be hammer sounded by an experienced surveyor to make sure the core hasn't delaminated, while calling that unlikely on a boat of this age.

Where to look. Out of the water, the hull bottom at the chock and cradle points for cracks, filler and repairs, and sound the bottom panels for dull areas.

Engines and electronics

Olsen calls the Cummins engines usually reliable and strong, and asks for proof the service schedule was kept, including the cooling system and anode replacement as well as oils and belts. He also asks that all the electronic control boxes and cabling are dry, clean and secure.

Where to look. The service record, anodes, and the control boxes and cabling for damp and loose connections.

On the sea trial

Olsen suggests buyers check they're at home with the helm seating, controls and steering, and with the low flybridge seating and rails, which can feel disconcerting in a seaway. He also warns that some saloon furniture has sharp corners.

What to check on a Prestige

Area What to look for Source of the concern
Hull bottom at chock points Cracks and repairs Olsen, 420 Fly
Hull core Delamination on sounding Olsen, 420 Fly
Engines Service record, cooling, anodes Olsen, 420 Fly
Electronics Control boxes and cabling dry and secure Olsen, 420 Fly
Flybridge Low seating and rails Olsen, 420 Fly

Writing it up

"Hull bottom: star cracking in the gelcoat at two former chock positions on the port side, dull on sounding over about 0.2 m². Recommend moisture readings and an assessment of the core by a repairer before purchase." Give the positions and the sounding result.

Findings to look for on a Prestige

Each page shows how the defect is found, what decides the grade and example findings written up at A, B and C.

HULL AND STRUCTURE

Gelcoat stress cracks

What star cracks and parallel gelcoat cracks say about a fibreglass boat, how a surveyor tells crazing from structural cracking, what repair involves and three example findings graded A, B and C.

How to find and write it up
HULL AND STRUCTURE

Wet deck core

How water gets into a cored deck, how a surveyor maps it with a moisture meter and a hammer, which readings to trust, what recoring costs and three example findings graded A, B and C.

How to find and write it up
UNDERWATER GEAR

Depleted anodes

When sacrificial anodes need replacing, zinc, aluminium or magnesium for your water, what anodes that aren't wasting mean, what a surveyor checks and three example findings graded A, B and C.

How to find and write it up

Frequently asked

What should I check on a used Prestige?

Surveyor Chris Olsen, in Motor Boat & Yachting's report on the Prestige 420 Fly, asks for a careful look at the undersides for repairs, particularly where the boat has been lifted and stored on chocks, since cored hulls can crack if stored badly. He also asks for hammer sounding for delamination, a check of the Cummins service record including cooling and anodes, and dry, secure electronic control boxes.

Are Prestige hulls cored?

The Prestige 420 Fly has a cored hull, and Olsen warns that cored hulls can be prone to cracking if stowed badly. He calls delamination unlikely on a boat of its age, but still asks for the undersides to be sounded.

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