As part of the refit, the interior received a complete overhaul under the expert guidance of Boutsen Design in Monaco. While preserving her original woodwork, the interior has been sympathetically modernised, blending timeless elegance with contemporary comfort, all while maintaining the heritage and charm of a classic Feadship.
Her exterior has also been thoughtfully modernised for today's yachting lifestyle, featuring new teak decks, a complete repaint, and enhanced deck spaces. This superyacht is ready for private ownership or charter use.
Vessel Name: Synthesis 66
Builder: FEADSHIP
Model Year: 1982
Year Built: 1982
Category: Motor Yacht
Country: Monaco
MLS #: 442251
Heads: 1
Sleeps: 10
Staterooms: 5
Crew Berths: 9
Crew Sleeps: 9
Length: 42.37 (42.37m)
Draft: 8' 3" (2.5m)
Beam: 26' (7.9m)
Cruise Speed: 12 Knots
Max Speed: 13 Knots
Water Capacity: 2641.72 Gal
Holding Tank: 1268.03 Gal
Manufacturer: Caterpillar
Model: D379 TA
Engine Hours: 6446
Engine Type: Inboard
Fuel Type: Diesel
Horsepower: 575
Manufacturer: Caterpillar
Model: D379 TA
Engine Hours: 6465
Engine Type: Inboard
Fuel Type: Diesel
Horsepower: 575
Length: 42.37 meters (139’) including platform / 40.23m (131’9”) excluding platform
Beam: 7.90m (25’11”)
Draft: 2.5m (8’2”)
Build Year: 1982
Refit Year: 2023
Builder: Feadship, De Vries Scheepsbouw
Naval Architect: De Voogt
Interior Refit: Boutsen Design Monaco
Gross Tonnage (GT): 347
Hull Material: Steel
Hull Colour: White
Hull Configuration: Displacement
Superstructure Material: Aluminium
Flag: Malta (Commercial Compliance)
Classification: Lloyds 100A1 SSC Yacht, Mono, G2A, LMC
Compliance: 5-Year Special Survey Completed May 2022, up to date with interim inspections as of Feb 2025
Performance & Capacity
Main Engines: 2 x Caterpillar D 379 TA (575 hp each @ 1225 rpm)
Top end rebuild completed in 2021 at 5,000 Hours
Fuel Capacity: 44,000 litres
Fresh Water Capacity: 10,000 litres
Grey Water: 4,800 litres
Black Water: 800 litres
Clean Oil: 237 litres
Dirty Oil: 500 litres
Cruising Speed: 12 Knots
Maximum Speed: 13 Knots
Accommodation
Number of Cabins: 5
Guest Capacity: 10 guests in 5 cabins
Crew Capacity: Up to 9 crew in 5 cabins
Engine Make/Model: Caterpillar D 379 TA
Engine Hours:
Port Engine: 6,446 hours
Starboard Engine: 6,465 hours (as of Feb 28, 2025)
Traditional Shafts
Performance & Fuel Consumption
Maximum Speed: 13 Knots
Consumption: 285 L/H
Range: 3,500 NM
RPM: 1,200
Cruising Speed: 12 Knots
Consumption: 190 L/H
Range: 3,500 NM
RPM: 1,050
Generators & Electrical
Generators: 2 x 100kW John Deere (new in 2012, top-end rebuild in 2023)
Generator Hours:
Port: 10,818 hours
Starboard: 9,933 hours (as of Feb 28, 2025)
Generator Fuel Consumption: 15 L/H
Shore Power: Marpower 90 Kva converter (fitted in 2022)
Load Bank: Sephco 55kW
24 V DC System: Engine start, emergency lighting, and ship electronics
Other Machinery
Water Makers: Idromar (new 2023)
Stabilizers: Vosper stabilizer system with Koopnautic controls (3’ x 7’ fins) MK III (not zero speed)
Bow Thruster: Schottel 15kW electric
Sewage Treatment: Headhunter
Fresh Water System: Gianneschi pumps
Fuel Cleaning: Alfa Laval fuel centrifuge
Bilge & Fire Pumps: 2 x Azure 50A + 1 x emergency gasoline fire pump
Engine Room Fire Suppression: Kidde Halon system
Internet: JRC Fleet broadband, Iridium Open port
PBX Telephone System
Navigation Equipment
Radars: 2 x Furuno FAR2127
Gyrocompass: Navigat X Mk II
Magnetic Compass: Observator
Auto Pilot: Sperry Navipilot V
Depth Sounder: Furuno FE700
GPS: Furuno GP150
Chart Plotter: Raymarine
Wind/Speed Log: Furuno RD30 with Airmar Weather Station
Navtex: Furuno NX700
AIS: Furuno
VHF: Sailor RT2048, Inmar Sat C, Sailor TT 3603E, Sailor LRIT
Loud Hailer: Standard Horizon LH10
Video Equipment: SMART TVs throughout, IPTV (Global Streaming), Apple TV
Audio Equipment: AMX Controllers (iPads), Sonos
Cooking Equipment: Commercial Multi-top Miele Hob, 2 Miele Ovens
Refrigeration/Freezer: Gram Refrigerators & Freezers
Dishwashers: 2 x Miele High-Speed Commercial Dishwashers
Crew Galley/Mess Equipment
Microwave: Miele
Refrigeration/Freezer: 2 x Gram Refrigerators & Freezer
Boat Deck Bar
Cooking Equipment: Miele hot plate, Miele grill, Miele hob
Refrigeration: 2 x Virtrifrigo Fridges
Breakfast Bar
Refrigeration: Gram Refrigerator
Ice Maker: Virtrifrigo
Dishwasher: Miele High-Speed Commercial
Laundry Equipment
Washing Machines: 2 x Miele
Dryers: 2 x Miele
1 x Nuovajolly (Prince 38) RIB with 2 x 300HP Yamaha Outboards
1 x 3.4m Zodiac with 25Hp Yamaha Outboard
Jet Skis & Water Toys:
2 x Yamaha FX Wave Runners (750 Hp)
2 x Jet Surf Boards MXR
1 x Fun Air Inflatable Runway
1 x Jobe Trampoline
3 x Seabobs (F5)
2 x O’Neil Wakeboards
2 x Jobe Inflatable Doughnuts
2 x Sea Fishing Rods & 2 x Casting Rods
10 x Snorkel Masks & Flippers
Aft Warping Capstans: 2 x Aft Deck Capstans
Anchors: 2 x 500 lb. Stockless Anchors
Anchor Chain: 2 x 400 feet 5/8” Anchor Chain
Boat Crane & Davits: 2 x Atlas 500kg Tender Cranes (foredeck & swim platform)
Passerelle: 2 x Marquip Passerelle, Starboard Hydraulic Passerelle
Swimming Platform: With Shower
Other Features:
Bridge Deck Jacuzzi (2,000L, 8-person)
3 x Kahlenberg Trumpet Horns
20” Carlisle and Finch Search Light
