YachtCodex
Hallberg-Rassy

Hallberg-Rassy P-28

1955–1973

Discontinued
Hallberg-Rassy P-28 — photo 1

1 / 8

Hallberg-Rassy

Design

Designer
Harry Hallberg

Summary

29.7 ftLOA4.2 ftDRAFT7.7 ftBEAM
Sailing MonohullSail
Length overall
29.7 ft
Beam
7.7 ft
Draft
4.2 ft
Displacement
6,834 lb
Sail area (upwind)
371 ft²
Cabins
1

* 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.

Sailing Ratios

Classic yacht-design ratios worked out from the builder's published figures, each shown against the bands designers read it by.

Sail area / displacement

How much sail the boat carries for its weight — its power in light air.

ModestCruiserPerformanceRacing162024Hallberg-Rassy P-28: 16.5
  • 16.5· Cruiser
How it is worked out

sail area (ft²) ÷ (displacement as ft³ of seawater)^⅔

published upwind sail area

Displacement / length

How heavy the boat is for its waterline length. Lower is lighter and quicker; higher is steadier and roomier.

UltralightLightModerateHeavyVery heavy100180270350Hallberg-Rassy P-28: 307
  • 307· Heavy
How it is worked out

displacement (long tons) ÷ (0.01 × waterline length in ft)³

Ballast ratio

The share of the weight carried in the keel — a rough guide to stiffness, though how deep that weight sits matters as much.

LowModerateHigh3040Hallberg-Rassy P-28: 42
  • 42· High
How it is worked out

ballast ÷ displacement × 100

Comfort ratio

Ted Brewer's measure of how gently a boat moves in a seaway. Higher means a slower, easier motion.

LightCoastalModerate offshoreHeavy offshoreVery heavy20304050Hallberg-Rassy P-28: 28.9
  • 28.9· Coastal
How it is worked out

displacement (lb) ÷ (0.65 × (0.7 × LWL + 0.3 × LOA) × beam^1.333), lengths in ft

Capsize screening

A guide from the inquiry after the 1979 Fastnet race: below 2 was taken as suited to ocean passages. It ignores hull shape and where the ballast sits.

Below 22 and above2Hallberg-Rassy P-28: 1.63
  • 1.63· Below 2
How it is worked out

beam (ft) ÷ (displacement as ft³ of seawater)^⅓

Hull speed

Roughly the speed a displacement hull reaches before it has to climb its own bow wave.

  • 6.2 kn
How it is worked out

1.34 × √(waterline length in ft), in knots

Most builders publish a light displacement. The ratios were defined on a loaded boat, so every boat here reads a little lighter than a surveyor's figure would — all alike, which keeps them comparable.

Tanks

What the builder publishes about how fast, how strong and how much the boat carries.

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

  • Fuel11 gal
    Water17 gal

A figure marked with a quote mark was read from the builder's page. Open it for the exact line, the page and the date.

Dimensions

LOA
29.7 ft (9.04 m)
Hull length
—
LWL
21.5 ft (6.55 m)
Beam
7.7 ft (2.35 m)
Draft (min)
4.2 ft (1.28 m)
Draft (max)
4.2 ft (1.28 m)
Air draft
—
Displacement
6,834 lb (3,100 kg)
Ballast
2,866 lb (1,300 kg)
Cabins
1
Heads
—
Berths
—

Sail Plan

Main sail
—
Jib
—
Genoa
—
Sail area
371 ft² (34.5 m²)
Downwind sail area
—
Rig type
—

Engine and Tanks

Engine
10 hp
Engine count
1
Engine manufacturer
—
Propulsion type
shaft drive
Fuel capacity
11 gal (40 L)
Fresh water capacity
17 gal (65 L)
Black water capacity
—

Construction

Mast material
—
Hull material
—
Deck material
—
Keel type
—
Rudder type
—
Steering wheels
—

Builder's Own Figures

Hull length hull #1-499
8.61 m
Hull length hull #500-536
9.04 m
Engine shaft
25 mm
Sail area basis
sail area with jib as printed

Figures read fromwww.hallberg-rassy.com/yachts/previous-models/hallberg-rassy-p-28· Technical dataread 9/20/2026

Layouts & Drawings

3 drawings from the builder's page: general arrangement, sail plan, profile.

About Hallberg-Rassy

Premium production

Swedish builder of bluewater cruising sailboats, based in Ellös and formed in 1972, when the Rassy yard took over that of Harry Hallberg (founded in 1943), and still 100% family-owned.

Hallberg-Rassy began as two yards. Harry Hallberg opened his own wooden-boat yard at Kungsviken on the island of Orust in 1943, built the Folkboat and the Kungskryssaren in series, and in 1963 was among the first to build sailing boats in GRP in series -- his P-28, most of its first hundred sold to the USA, was the yard's early export success. Christoph Rassy arrived from Bavaria in 1960, bought the old Hallberg yard at Kungsviken when Hallberg moved to Ellös in the mid-1960s, and in 1966 launched the Rasmus 35, a pioneering long-distance cruiser with a centre cockpit behind a windshield -- the arrangement the yard has kept ever since. When Harry Hallberg retired in 1972 the Rassy yard bought the Ellös premises and the two names merged into Hallberg-Rassy; the first new design under that name, the Monsun 31, became the bestseller with 904 built by 1982. Germán Frers has drawn every model since 1988. The yard is still in Ellös and still family-owned.

Visit brand page

The Hallberg-Rassy Range

Every model Hallberg-Rassy publishes, by length — where this one sits in the range.

  1. Hallberg-Rassy 310Discontinued30.9 ft
  2. Hallberg-Rassy 312Discontinued30.9 ft
  3. Hallberg-Rassy 94 KutterDiscontinued30.8 ft
  4. Hallberg-Rassy Monsun 31Discontinued30.7 ft
  5. Hallberg-Rassy P-28· this modelDiscontinued29.7 ft
  6. Hallberg-Rassy 29Discontinued29.2 ft
  7. Hallberg-Rassy 26Discontinued26.1 ft
  8. Hallberg-Rassy Misil IDiscontinued24.1 ft
  9. Hallberg-Rassy Misil IIDiscontinued24.1 ft

Similar Yachts