50m Aluminium Semi-displacement

Design

Designer

Omega Architects

Interior designer

Cristiano Gatto Design

Summary

Best Suited For

• Bluewater Cruising

  From the published figures: range 3100 nm

Tags are derived from certified class, length, sail area, accommodation and tankage using the criteria described on the Sources page; an editor may add or remove one.

Speed, Power & Tanks

What the builder publishes about how fast, how strong and how much the boat carries.

Dimensions

LOA

164 ft (49.98 m)

Hull length

—

LWL

—

Beam

29.5 ft (9 m)

Draft (min)

7.1 ft (2.15 m)

Draft (max)

—

Air draft

—

Displacement

—

Ballast

—

Cabins

5

Heads

—

Berths

—

Performance

Maximum speed

23 kn

Cruising speed

—

Range

3100 nm

Guests

12

Crew

9

Engine and Tanks

Engine

—

Engine count

2

Engine manufacturer

MTU

Propulsion type

—

Fuel capacity

13,473 gal (51,000 L)

Fresh water capacity

4,227 gal (16,000 L)

Black water capacity

—

Construction

Hull material

Aluminium

Deck material

—

Rudder type

—

Steering wheels

—

Builder's Own Figures

Maximum power

2 x 2,560kW (printed in kW only)

Draught

2.15 m at half load

Hulls in this Series

Project Sophia, Aquamarine (2021), Book Ends (2022), ALP (2024)

Bow thruster

ZF-Marine 90kW, electrically driven

Cabins

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

Gross tonnage

499 GT

Main engines

2 x MTU 16V 4000 M65L (IMO Tier III)

Hull type

Semi-displacement

Main generators

2 x Zenoro, each 118kW, 50 Hertz

Maximum speed

23 knots, at half load

Range

3,100 nm at 11 knots

Figures for

YN 21150 Project Sophia (delivery 15 July 2026); the platform has no page of its own

Stabilisers

Naiad Dynamics, 2 fins, type 720, zero speed

Layouts & Drawings

4 drawings from the builder's page: general arrangement, sail plan, profile.

• 

  sun-deck — Heesen Yachts

• 

  wheel — Heesen Yachts

• 

  main-deck — Heesen Yachts

• 

  lower — Heesen Yachts

About Heesen Yachts

Semi-custom

Dutch superyacht yard at Oss, founded by Frans Heesen in 1978, building aluminium and steel motor yachts entirely in-house — five semi-custom Heesen Series platforms from 50 to 57 metres, built on speculation for short delivery, alongside Smart Custom and Full Custom yachts.

In 1978 the entrepreneur Frans Heesen took over an existing shipyard in Oss harbour and began producing aluminium Striker boats. A year later the 20-metre Amigo was launched, the first yacht to bear the Heesen name, and Heesen Shipyards was born. The 38-metre Octopussy of 1988, at over 50 knots the fastest luxury yacht in the world, was the yard's worldwide breakthrough. In 1992 the 50-metre Achiever, built for long voyages, became the first of many steel displacement yachts, and in 1996 Obsessions was, when launched, the largest and most powerful sport fisherman in the world. An expansion in 2008 raised capacity to up to eight yachts a year. Galactica Star (2013, 65 m) was Heesen's first fast displacement yacht, Alive (2014) the first yacht in the world to harness a Hull Vane, and the 70-metre Galactica Super Nova (2016) its largest yacht so far, the year a new 85-metre dry dock opened. Home (2017) introduced a cleaner, quieter hybrid solution, and for its 40th anniversary in 2018 the yard announced the 80-metre Project Cosmos, with a top speed of 30 knots. On 7 April 2025 Heesen announced its full acquisition by the Dutch entrepreneur and investor Laurens Last.

The Heesen Yachts Range

Every model Heesen Yachts publishes, by length — where this one sits in the range.

1. 57m Aluminium FDHF186 ft
2. 55m Steel FDHF180.4 ft
3. 50m Aluminium Semi-displacement· this model164 ft
4. 50m Steel FDHF163.7 ft
5. 50m Aluminium FDHF163.4 ft

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