KOSHI 51′
All Carbon Fiber.
Zero Compromises.
100%
CARBON FIBER
CONSTRUCTION
2000
HORSEPOWER
MERCURY 4 X 500R
51′
LENGTH
15.54 METERS
Fastest In Its Class.
Without Compromise.
The KOSHI 51′ is the fastest boat in the world in its category, built without compromise for those who understand the elemental value of time, and who demand the very best from every moment at sea. This watercraft is an expression of extreme engineering as lifestyle: sharp lines, advanced technologies, and a lightweight build that makes every mile pure adrenaline.
Every Journey
An Unforgettable Thrill.
Every detail on the 51′ has been designed to deliver absolute performance without sacrificing comfort. At the bow, sunbeds and seating provide space for open-air relaxation. Below deck, an elegant cabin with a double bed and dedicated storage combines practicality and luxury in an elegant, functional environment.
Koshi 51′ Highlights
Carbon Fiber Construction
The ultimate balance of strength-to-weight.
Thrilling Power
Four engines and an incredibly light frame ensure you’ll arrive first.
Technology At The Helm
Advanced instruments and comfortable design put you in complete control.
Luxury Fixtures
51′ gives you complete freedom, plus the comforts of home.
TECHNICAL SPECS
Overall Length (Incl.Engine) – 51 ft / 15.54 m
Beam – 11 ft 2in / 3.46 m
Lightship weight (including Engines) – 12,000 lbs / 5,454 kg
Fuel Capacity – 410 gal. / 1550 ltr.
Construction – Full Carbon Fibre / KOSHI Patented Technology
Passengers – P:8
MAX Power Engines – MERCURY 4 X 500R 2000HP
Accomodation / Berth – 2 + 1 Persons
Maurizio Bulleri gives a tour of the Koshi 51′.
When something truly unique comes to the boating world, experts take notice. The Boat Show joined us aboard the Koshi 51′ to take in all of its features. Click play and watch what they discovered.
Anchor
Forward Seats
Automatic Table
Sunbed
Thruster
Underbed Storage
Bed for 2
Owner’s Cabin
Bathroom
Cabin Entrance
Passenger Seating
Refrigerator &
Glacette
Sink
Gyroscope (Optional)
Aft Seats
Fuel Fill
Technical Compartment
Aft Sunbed
4x Mercury 500R Engines
The Future of Watercraft Design
Knowledge, expertise, and unmatched technology are at the core of Vice Marine’s mission.
Carbon Fiber
Astoundingly strong, lightweight, and weather-resistant, carbon fiber is the ultimate material of choice for advancing the art and science of marine vessel design.
Parts
Our bespoke components add durability and style to any watercraft. Our passion for high performance and attention to detail is evident in every aspect of our component design and manufacture.
Service
We are a company of true boating enthusiasts. We offer concierge-level responsiveness in delivering precisely what you need to create a next-generation watercraft.
Find out more about the Koshi 51′.
Vice Marine is your luxury watercraft expert. Get in touch today to learn more about this next-generation boating experience.
John Jansheski
FOUNDER, VICE MARINE












