Milne Javelin Sailboat Review, Specs, and Listings

Peter Milne·1968·Porter Brothers
Approximate drawing

Hover a measurement to read its value

Hull Type
Monohull · centerboard
Rig
Fractional Sloop
LOA
17.58' · 5.36 m
Disp.
260 lbs · 118 kg
First year
1968

The Milne Javelin is a 17foot 7inch planing dinghy drawn by British naval architect Peter Milne and first released in 1968 as a fast, strong performance sailboat with a Portsmouth Yardstick of 933. Fewer than 100 examples were ever built, and the type has lived its life as a small sailing dinghy rather than a cruiser, crewed by two and raced hard on short courses.

Measurements

Dimensions 01

Length Overall
17.58 ft
Length on deck
Waterline Length
Beam
5.5 ft
Draft
4.26 ft
Maximum Headroom
Air Draft

Construction & hull 02

Construction
Fiberglass
Hull Type
Monohull
Keel Type
Centerboard
Rudder
1× —
Ballast
(Lead)
Displacement
260 lbs
Water Capacity
Fuel Capacity

Rig & sails 03

Rigging Type
Fractional Sloop
Mainsail luff
Mainsail foot
Foretriangle height
Foretriangle base
Forestay Length (estimated)
Sail Area
170 sqft

Calculations 04

Sail Area to Displacement Ratio
66.77
Ballast to Displacement Ratio
Displacement to Length Ratio
Comfort Ratio
Capsize Screening Ratio
3.45
Hull Speed

Design and Construction

Peter Milne set the Javelin's proportions in the late sixties with a length of 5.36 meters and a beam of just 5.5 feet, giving the hull a length-to-beam ratio of 3.19 and making it slimmer than 92% of comparable dinghies. That narrow, low-volume hull is the reason the class earned its reputation as a fast, strong performance sailboat rather than a roomy dayboat. The hull is fiberglass, built originally by the British yard Wright and later at other yards as well, with a solid laminate rather than a cored skin. At 118 kilograms (250 lbs) the hull is light enough to plane, yet the immersion rate of about 60 kg/cm (337 lbs/inch) shows how little it sinks under crew weight — a narrow boat that responds quickly to shifting ballast.

Rig and Sail Plan

The Javelin carries a fractional sloop rig with 15.79 square meters of upwind sail area and a 17.50 square meter spinnaker for downwind legs. On the light hull those areas are generous. The centerboard keel draws 1.3 meters when lowered, giving righting moment and lift to match the tall fractional rig, while the board retracts for trailing and shallow work. Two crew are specified, and the boat's behavior under that load is governed by the immersion figure above — move a body and the waterline moves with it.

Accommodations

There are no accommodations. The Javelin is a racing dinghy of 17 feet 7 inches with a crew of two and no provision for sleeping, cooking, or stowage beyond what a day sailor carries on the centerline. Its identity is speed and handling, not living aboard.

Known Issues

The known constraints are inherent to the design: the slender 3.19 length-to-beam hull and 337 lbs/inch immersion mean stability is crew-dependent and the boat is unforgiving of poor weight placement. A centerboard trunk and retracting foil are the only below-water moving parts, and their maintenance is the owner's principal mechanical task.

Refits and Ownership

With fewer than 100 built and production centered on the 1968 design, most Javelins are now veteran racers. Ownership centers on rig tuning, spinnaker care, and centerboard pivot service rather than systems refit. The simple fiberglass hull and fractional rig keep ongoing cost low, but the small class size means spars, sails, and boards are often custom or second-hand rather than catalog items.

The Verdict

The Milne Javelin is a pure racing dinghy: narrow, light, and quick, with a documented Yardstick that places it among the faster classic planing types of its size. Its scarcity and crew-weight sensitivity make it a specialist's boat rather than a family daysailer.

Pros

  • Fast, strong performance sailboat with a 933 Portsmouth Yardstick
  • Slender hull — slimmer than 92% of similar dinghies
  • Light 118 kg fiberglass hull with retracting centerboard
  • Generous fractional rig and spinnaker for the length

Cons

  • Crew weight critically affects trim (337 lbs/inch immersion)
  • Fewer than 100 built — limited class and spare-part pool
  • No accommodations of any kind

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