Quanta 28 Sailboat Review, Specs, and Listings

Ray Wall·1985 – 1988·~12 hulls·Quanta Yachts Ltd.
Quanta 28 drawingBuilder drawing
Hull Type
Monohull · fin
Rig
Masthead Sloop
LOA
28.42' · 8.66 m
Disp.
6,900 lbs · 3,130 kg
First year
1985

The Quanta 28 is a 28foot finkeel sloop designed by Ray Wall and built by Quanta Yachts Ltd. Only a dozen were launched between 1985 and 1988. Wall’s influence is clear in the kickup over the window and the boat’s welljudged proportions, which echo his earlier designs without simply copying them. The result looks deliberate rather than decorative.

Measurements

Dimensions 01

Length Overall
28.42 ft
Length on deck
—
Waterline Length
22.58 ft
Beam
9.75 ft
Draft
5.5 ft
Maximum Headroom
—
Air Draft
—

Construction & hull 02

Construction
Fiberglass
Hull Type
Monohull
Keel Type
Fin
Rudder
1× Spade
Ballast
3,080 lbs (Lead)
Displacement
6,900 lbs
Water Capacity
—
Fuel Capacity
—

Rig & sails 03

Rigging Type
Masthead Sloop
Mainsail luff
33.75 ft
Mainsail foot
10.75 ft
Foretriangle height
39 ft
Foretriangle base
11.75 ft
Forestay Length (estimated)
40.73 ft
Sail Area
408 sqft

Calculations 04

Sail Area to Displacement Ratio
18.01
Ballast to Displacement Ratio
44.64
Displacement to Length Ratio
267.56
Comfort Ratio
21.1
Capsize Screening Ratio
2.05
Hull Speed
6.37 kn

Design and Construction

The Quanta 28 has a solid fiberglass hull and deck. She displaces 6,900 pounds and carries 3,082 pounds of lead ballast, giving a ballast-to-displacement ratio of 44.6 percent. That moderate displacement leaves room for the gear needed aboard a coastal cruiser without bloating the hull.

A 9-foot 9-inch beam, 5-foot 6-inch draft, fin keel, and spade rudder place her firmly in the modern fin-and-spade camp. Her 22.6-foot waterline supports a theoretical hull speed of about 6.4 knots.

The exterior carries familiar elements from Wall’s previous boats, particularly the kickup over the window and the overall sense of proportion.

Rig and Handling

The Quanta 28 is a masthead sloop with a sizable 409-square-foot sail plan, deliberately proportioned for the light-air evenings typical of coastal sailing. Her 28-foot 5-inch sail length and sail area produce a sail-area-to-displacement ratio of 18—healthy for a boat of this weight, but not extreme.

With her fin keel and spade rudder, she is designed to remain easy to handle in a breeze that would leave heavier boats rolling.

Accommodations

Below, the Quanta 28 follows a conventional coastal-cruising layout. The standard forward V-berth is separated from the athwartships head by a bi-fold door, providing a measure of privacy.

The standout berth is to port: a seven-foot berth that pulls out to form a double, generous for a boat of this length. Opposite, the starboard settee berth serves mainly as seating but can accommodate an occasional overnight guest, with the occupant’s feet extending beneath the galley.

Aft to port is a chart table where some buyers would rather have found a quarterberth. It was a marketing gamble that traded sleeping capacity for a dedicated navigator’s workspace.

Verdict

The Quanta 28 is a small, limited-production coastal cruiser with a clean, Wall-styled hull and a sail plan tuned for light air. Her interior is straightforward and usable, though the aft layout is compromised by the choice of a chart table over a quarterberth.

With only twelve boats built, the Quanta 28 is a rare find. Her fundamentals—solid fiberglass construction, sensible ballast, and a drivable rig—are sound.

Pros

  • Styling consistent with Wall’s earlier, well-proportioned designs
  • Sizable sail plan for light-air coastal sailing
  • Seven-foot port berth that converts to a double
  • Solid fiberglass hull and deck with lead ballast

Cons

  • Aft chart table replaces a desirable quarterberth
  • Only twelve built, limiting fleet support and parts commonality

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