Irisha - 2018

51 metre Smart Custom

Fairly aggressive and dynamic

Irisha is a semi-displacement Smart Custom 51-metre motor yacht with an impressive top speed of 26 knots. Her exterior lines, designed by British studio Harrison Eidsgaard, are founded on the successful engineering platform of Heesen’s award-winning 5000 Aluminium class. Driven by the owner’s desire for something “fairly aggressive and dynamic”, the radical design gives her a distinctive edge on the water.

First impressions

Technically challenging from both a design and construction point of view, the curved glass sheets used for her iconic raised wheelhouse are among the largest produced in Europe. Forward on the main deck, a built-in settee is protected by a hydraulically driven canopy that creates a wind-sheltered outdoor space ideal for relaxing in privacy. More forward, in the bow a second seating area protected from the wind is the ideal place for admiring the views when underway.

Step aboard

Irisha boasts a chic understated interior featuring varying shades of light and dark grey (the owner’s favourite colour) with beige and blue accent colours. Rich materials are featured sparingly throughout, including stainless-steel finishes used to highlight architectural details. The sky lounge is equipped with a cinema screen and projector for film nights, and served by a wet bar for the ideal socialising hub.



Hull type: Semi-displacement

Exterior design: Harrison Eidsgaard Design

Interior design: Harrison Eidsgaard Design

Hull: Aluminium


Length over all: 51.00 metres / 167 feet 4 inches

Beam over all: 9.00 metres / 29 feet 6 inches

Draft (half load): 2.5 metres / 8 feet 2 inches

Tonnage: approx. 499 GT


Crew: 10

Guests: 10

Cabins: Full-beam owner’s stateroom, two double guest suites and two twin guest suites

Technical Details

Maximum speed (half load): 26 knots

Range: 2,425Nm at 11 knots

Fuel capacity: 55,500 litres / 14,663 US Gallons

Fresh water: 16,200 litres / 4,280 US Gallons

Propulsion Details

Main engines: 2 × MTU 16V 4000 M93L

Maximum power: 2 x 3,440kW

Main generators: 2 x Kilo-Pak, each 99kW

Bowthruster: ZF-Marine 90kW, hydraulically driven

Stabilisers: Naiad Dynamics, type 720, zero speed

General arrangement

Sun deck

Wheelhouse deck

Main deck

Lower deck



Mark Cavendish   Chief Commercial Officer

| Robert Drontmann   Sales Director

| Sara Gioanola   PR & Press Office Manager

Heesen Yachts North America

Thom Conboy   Agent North-America, Mexico, Bahama's & Caribbean