The ISA GTO 70 at speed in profile, throwing a high white wake, with an Italian flag on the hardtop
MarineSource ISA YachtsWorld premiere

GTO 70

70 feet of pure speed.

Manufacturer statement
21.5 m / 70.5 ft
Length overall
6.5 m / 21.3 ft
Beam
1.2 m / 3.9 ft
Max draft
50 kn
Top speed

A 21.5-metre (70.5 ft) speed yacht built in carbon fibre and quoted at 50 knots on two MAN V12 engines.

Drawn by Galeazzi Design

Galeazzi Design drew both the exterior and the interior, in a new collaboration with ISA. ISA calls the result a contemporary take on the luxury speed yacht, with an aggressive, functional design language put to the service of performance.

A hull shaped by computer

The planing hull was developed by ISA's own naval engineering team through computational fluid dynamics studies. The yard says it is tuned for stability, efficiency and precise handling even at top speed.

The GTO 70 running past a hillside town, its teak foredeck and silver hull seen from above

Fifty knots on two V12s

Two 1,800 hp MAN V12 engines give a quoted top speed of 50 knots, and 55 knots with the optional 2,000 hp pair. ISA quotes a cruising speed of 43 knots, or 48 knots with the optional engines. ISA sums the boat up as compact, lightweight and radically geared toward speed: not an exercise in style but an engineering platform. Hull and superstructure are both carbon fibre.

Technical specifications

By the numbers

12 specifications, with a source linked on each row. Reference: www.isayachts.com.

  • ISA GTO 70 general arrangement drawing seen from above, showing the aft sunpad and seating, the hardtop and the long foredeck sunbed

    General arrangement: the boat from above, with the aft sunpad, hardtop and foredeck sunbed.

  • ISA GTO 70 main deck plan with aft sofa, a cockpit galley labelled fridge, grill and ice maker, the engine room hatch and the helm

    Main deck: aft seating, cockpit galley with fridge, grill and ice maker, and the helm.

  • ISA GTO 70 lower deck plan labelled owner’s cabin, guest cabin, VIP cabin, galley, three bathrooms and a crew cabin

    Lower deck: owner’s cabin forward, guest and VIP cabins, galley and crew cabin.

  • ISA GTO 70 optional main deck layout labelled double L sofa and pilot seats

    Optional main deck: double L sofa and pilot seats.

  • ISA GTO 70 optional main deck layout with an external galley and a large sofa

    Optional main deck: external galley and big sofa.

  • ISA GTO 70 optional main deck layout with a small bar and a large sofa

    Optional main deck: small bar and big sofa.

  • ISA GTO 70 optional lower deck plan with a living area where the guest cabin is, plus owner’s, VIP and crew cabins

    Optional lower deck: a living area in place of the guest cabin.

ISA Yachts GTO 70 specifications
Length overall21.5 m / 70.5 ft
Beam6.5 m / 21.3 ft
Maximum draft1.2 m / 3.9 ft
Hull typeMonohull
Hull materialCarbon fibre
Superstructure materialCarbon fibre
DesignerGaleazzi Design
Engines2 × MAN V12, 1,800 hp; optional 2 × MAN V12, 2,000 hp
Top speed50 knots; 55 knots optional
Cruising speed43 knots; 48 knots optional
Guests and cabins6 guests, 3 cabins
Crew and cabins2 crew, 1 cabin

Availability

Explore ISA Yachts on MarineSource

Browse boats on MarineSourceBack to Cannes 2026

Debut confirmed by isayachts.com.

About MarineSource

MarineSource is an AI-powered marketplace for boats and yachts, built around confidence, speed and clarity, pairing natural-language search and buyer-intent matching with independent data, so buyers can decide from anywhere in the world.

About ISA Yachts

ISA Yachts is a brand of Palumbo Superyachts. isayachts.com