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Arksen

Arksen 55

In production
Arksen 55 — photo 1

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Arksen55_shop_1 — Arksen

Design

Designer
Jarkko Jämsén
Naval architect
Aivan

Summary

56.8 ftLOA15.4 ftBEAM
Motor MonohullOutboardCE B
Length overall
56.8 ft
Beam
15.4 ft
Maximum speed
50 kn
Range
350 nm
Displacement
46,297 lb
Cabins
2–3

* A standard reference image, not the actual boat — shown to help visualise this model's published dimensions.

Best Suited For

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.

Speed

0204060kn
  • Cruising speednot published
  • Top speed50 kn

Power to weight

Total engine power per tonne of published displacement — more means livelier acceleration for the hull. Drawn for motor yachts.

not published: engine power

Tanks

Fuel and water on one scale: a tank twice the height holds twice as much.

  • Fuel845 gal
    Water74 gal

    9 gal of water per berth

Design Category

Certified CE design category B (Offshore): the wind and waves the EU Recreational Craft Directive says this boat is designed to take.

  1. D

    Sheltered waters

    Wind
    up to Beaufort 4
    Waves
    up to 0.3 m
  2. C

    Inshore

    Wind
    up to Beaufort 6
    Waves
    up to 2 m
  3. BThis boat

    Offshore

    Wind
    up to Beaufort 8
    Waves
    up to 4 m
  4. A

    Ocean

    Wind
    above Beaufort 8
    Waves
    above 4 m

Design limits set by the EU Recreational Craft Directive (2013/53/EU), in significant wave height. A category covers the conditions of those below it. It is the limit the boat was designed to, not a promise that it is safe in any conditions within it — that judgement stays with the skipper.

Dimensions

LOA
56.8 ft (17.3 m)
Hull length
—
LWL
—
Beam
15.4 ft (4.7 m)
Draft (min)
—
Draft (max)
—
Air draft
—
Displacement
46,297 lb (21,000 kg)
Ballast
—
Cabins
2–3
Heads
—
Berths
4–8

Performance

Maximum speed
50 kn
Cruising speed
—
Range
350 nm
Guests
—
Crew
—

Engine and Tanks

Engine
—
Engine count
—
Engine manufacturer
Yamaha / Mercury / Volvo Penta
Propulsion type
outboards (4 x Yamaha F450 XTO standard, 3 x Mercury V12 600 optional) or 3 x Volvo Penta inboards
Fuel capacity
845 gal (3,200 L)
Fresh water capacity
74 gal (280 L)
Black water capacity
—

Construction

Hull material
marine-grade aluminium
Deck material
—
Rudder type
—
Steering wheels
—

Builder's Own Figures

Hull form
double-stepped deep-V hull with bow ramp
Accommodation
two- or three-cabin lower deck (a crew-cabin layout is also shown); berths 4 to 8
Engine options
4 x Yamaha F450 XTO outboards (standard); 3 x Mercury V12 600 outboards; 3 x Volvo Penta inboards
Builder
Kewatec, Kokkola, Finland
Displacement basis
lightship, as printed (Lightship Displacement 21 T)
Top speed as printed
50 knots at light load
Range as printed
350 nm at 25-30 kts

Figures read fromarksen.com/pages/arksen-55-spec· Tech Specread 10/18/2026

About Arksen

Semi-custom

British adventure company founded by Jasper Smith that builds aluminium explorer yachts and boats — the Humphreys-designed Arksen 85, 75 and 65 with ranges of 3,700 to 7,000 nautical miles, the Finnish-built Adventure Series 55 and 35, and the Discovery Series RIBs 10 and 8.

Arksen's founder traces the company to a voyage in 1994, when he sailed Ardevora, a 55-foot Ron Holland ketch, from Hong Kong to Alaska by way of Japan, Kamchatka and the Aleutian Islands, reaching Sitka in the autumn seven months later; after a decade of mountaineering and climbing, he writes, it was that trip more than any other that changed him, and the film the crew shot sat on a shelf for decades. The company itself, the about page says, began at sea in 2016, when Jasper Smith and his son Stormy were sailing off Greenland and the scale and fragility of the ice cap turned a sailor's conviction into a company; having spent years climbing and sailing with his other son Harper as well, they set out to share that experience. Arksen describes itself as a young company whose team has crossed every ocean, working with long-standing partners that include Humphreys Yacht Design, Wight Shipyard Co., Kewatec, Design Unlimited and Aivan, and building explorer vessels, performance apparel and expeditions; its founder also established the charity 10% for the Ocean, which pools charitable giving across a coalition of brands for marine conservation.

Visit brand page

The Arksen Range

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

  1. Arksen 8589.9 ft
  2. Arksen 7578.4 ft
  3. Arksen 6569.9 ft
  4. Arksen 55· this model56.8 ft
  5. Arksen 3536.4 ft
  6. Arksen 1035.4 ft
  7. Arksen 826.2 ft

By the Same Designers

Boats this boat's designers also drew, for other builders too. Credits are grouped only where the names clearly agree, however each builder spelled them; an unclear one is left out.

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