offshorefull-keelencapsulated-keel

Alberg 35

Pearson Yachts · 1961–1967 · Sloop rig

Alberg 35
LOA34.75'
Beam9.67'
Draft5.17'
Displ.6.3t
Rigsloop
Hullfiberglass

Bluewater Evidence · Bluewater Capable

60% confidence

Practical Sailor's review cites an owner's account of sailing an Alberg 35 nonstop from Honolulu to Tahiti in 23 days, plus a separate 8,000-mile Pacific cruise aboard the type, real offshore mileage even without a named skipper or hull number attached. Designer Carl Alberg intended her as a coastal cruiser rather than a dedicated offshore boat, and Mahina's John Neal rates the design 1/5, calling it proven but old-fashioned for extended ocean work.

Known Issues

Ballast-to-hull voidsmoderatePassageBoats editorialAll years

The encapsulated lead ballast casting can separate from the surrounding fiberglass keel shell over time, leaving voids that require epoxy injection to repair.

Inspection: Sound the keel on survey for hollow spots indicating ballast-to-glass separation.

Cored deck (delamination)moderatePassageBoats editorialAll years, early hulls worst

Early boats used edge-grain balsa deck coring that delaminates under flexing once water intrudes; gelcoat crazing can also progress from cosmetic to structural if water penetrates the laminate.

Inspection: Sound the deck for soft spots and inspect gelcoat crazing closely, especially around stanchions and hardware.

Aging rigging, hardware, and enginemoderatePassageBoats editorialAll years

Boats this age generally need systematic replacement of standing rigging, deck hardware, and the original engine; the rudder design and prop-aperture placement are also dated by modern standards, contributing to poor performance backing down under power.

Inspection: Budget for a full rigging and hardware inspection, confirm engine service history, and sea-trial backing down under power before buying.

Overview

Carl Alberg drew the 35 for Pearson Yachts of Rhode Island, introduced in 1961 as the larger sibling to the Triton and Alberg 30. Pearson built about 280 hulls before ending the run in 1967, a solid production life for a boat of her size and era. Alberg himself considered her a coastal cruiser rather than a dedicated offshore design, but the type’s narrow, deep hull and heavy displacement have carried owners well beyond coastal waters in practice.

Design and Construction

Fiberglass construction was still new when Pearson laid up the first hulls, so they erred conservative and heavy, over an inch thick below the waterline. Practical Sailor calls the layup “easy to repair and relatively foolproof” even if not especially stiff by later standards. The deck is balsa-cored, and early hulls used inferior edge-grain balsa that can delaminate once water gets in. Ballast is 5,300 lb of lead, cast into the keel cavity and encapsulated in fiberglass, which removes keel bolts from the maintenance list but leaves the casting itself prone to voids opening up against the surrounding glass over time. The keel is a cutaway full keel with a forefoot cutaway and a keel-hung rudder, tiller-steered as standard with wheel steering available as an option.

Under Sail

The Alberg 35’s narrow 9’8” beam and slack bilges make her tender initially, heeling to about 25 degrees before her 42% ballast ratio starts to stiffen her up. Her long overhangs lengthen the effective waterline as she heels, so she sails faster than the 24-foot LWL alone would suggest, at the cost of a tendency to hobbyhorse in a chop. Practical Sailor’s review cites an owner who sailed one nonstop from Honolulu to Tahiti in 23 days, and a separate account of an 8,000-mile Pacific cruise aboard the type, real offshore mileage for a boat her designer meant mainly for coastal work. She came in both sloop (545 sq ft) and yawl (583 sq ft) configurations; the mizzen on yawl-rigged boats can double as a riding sail at anchor.

Buyers Notes

Sound the deck for soft spots from balsa-core delamination, particularly around stanchions and hardware, and check for gelcoat crazing that has progressed from cosmetic into the laminate. Sound the keel for hollow spots that would indicate the ballast casting has separated from the surrounding fiberglass. Inspect the mast compression post and supporting bulkhead structure for cracking or movement; some owners reinforce this area for offshore use. Early boats used galvanized fuel and water tanks that eventually corrode through and should be checked or replaced. As with any boat this age, expect the standing rigging, deck hardware, and original engine to need systematic replacement if a previous owner hasn’t already done it.

Layout and Interior

Two interior layouts were offered. A dinette version drops the cabin table to form a wide berth to port, with the galley to starboard alongside a 3-burner stove, icebox, and pantry lockers. The more common layout runs settees along both sides of the cabin, with the galley moved aft into the companionway area. Engine access is good, with several removable panels giving nearly complete access. Water and fuel tankage sit below the cabin sole, and a deep bilge keeps water from sloshing into the lockers in a seaway.

Recommended In

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  1. [1]SpecificationsAlberg 35 (1 to 221) - Specifications & Sail Dimensions - Good Old Boat- Dimensions, displacement, ballast, and per-sail area figures. Fetched directly, not WebSearch synthesis; sailboatdata.com itself returned 403 this pass.
  2. [2]ReviewPearson Alberg 35 Used Boat Review - Practical Sailor- Independent construction-quality and known-issues review, plus an owner-testimony offshore passage: Honolulu to Tahiti nonstop in 23 days, and a separate 8,000-mile Pacific cruise. Fetched directly, not WebSearch synthesis.
  3. [3]ReviewAlberg 35 - Good Old Boat- Independent editorial history and known-issues coverage; confirms the ~280-hull, 1961-1967 production run and 42% ballast ratio. Fetched directly, not WebSearch synthesis.
  4. [4]ReviewCruising World Alberg 35 Review (reproduced) - Alberg 35 Owners Association- Independently confirms the 545 sq ft sloop / 583 sq ft yawl sail-area split. Fetched directly, not WebSearch synthesis.
  5. [5]EditorialMahina Offshore Services - Boats to Consider for Ocean Cruising (John Neal, v4.26)- Rated 1/5 by offshore consultant John Neal, updated April 2026. Calls these proven but old-fashioned: narrow, short waterlines, and limited interior room.
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