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Motor Yacht · 40,50 m GEMS II

GEMS II is a 40.5m tri-deck motor yacht delivered by Tamsen Yachts in 2009 and refitted in 2022. Built in composite sandwich epoxy, she features a semi-displacement configuration, teak decks, an 8.6m beam and a gross tonnage of 358 GT. Her exterior and interior design are by the Tamsen Yachts in-house team.

She accommodates up to 12 guests in 5 en-suite cabins. The layout includes a full-beam master suite on the main deck with a private study, separate bath and shower, and two walk-in wardrobes. Two VIP double cabins and two twin cabins with Pullman berths complete the guest accommodation.

GEMS II is powered by twin MTU 16V2000M93 engines producing 2,400 HP each. She cruises at 12 knots, reaches a maximum speed of 15 knots and offers a range of 800 nautical miles at cruising speed. She is also equipped with ABT Track Fin stabilizers and VEEM zero-speed gyro stabilizers fitted in 2022.

Her exterior areas include an aft deck with a large sunpad and extendable dining table, as well as a spacious foredeck arranged around a jacuzzi, U-shaped seating and two tables. The garage and fold-down swim platform provide access to a Williams TurboJet 325, a Sea-Doo GTX 300 and a selection of water toys, including a 20m water slide, water skis, wakeboards and snorkeling equipment.

GEMS II is currently out of RINA class and cannot leave the dock under her own power. Technical and cosmetic works are required to return her to full operational status, particularly for commercial charter use. She is offered for sale in her current condition, with the main works relating to the requirements for reinstating her class.

Special Features :

- 40.5m tri-deck Tamsen Yachts motor yacht with an 8.6m beam and 358 GT of interior volume.
- 5 en-suite cabins for 12 guests, including a full-beam master suite on the main deck.
- ABT Track Fin stabilizers and VEEM zero-speed gyro stabilizers fitted in 2022.
- Foredeck jacuzzi, Williams TurboJet 325, Sea-Doo GTX 300 and 20m full-size water slide.

 
 

Specifications

Year built / Refit
2009 / 2022
Builder
Tamsen Yachts
Designer
Tamsen Yachts in-house
Length
40,50 m
Beam
8,60 m
Draft
1,80 m
Construction
GRP
Engine
2400HP, Inboard, Diesel, MTU 16V2000M93
Fuel capacity
5 l
Cruising speed
12 knots
Range
800 nm
Flag
French
Cabins
10
Guests
12
Crew
8

News & publications

  • GEMS II, a 40.5m Tamsen Yacht for Sale
    July 22, 2026

    GEMS II, a 40.5m Tamsen Yacht for Sale

    Built by Tamsen Yachts in 2009 and refitted in 2022, GEMS II is a 40.5m tri-deck motor yacht available for sale in Antibes. Her composite sandwich epoxy construction, semi-displacement configuration, 8.6m beam and 358 GT provide generous onboard volume. She accommodates up to 12...

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