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Grampian 30
Designer: Alex Mcgruer  ·  Builder: Grampian Marine Ltd.  ·  First built: 1969
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About the Grampian 30

Built during the height of the fiberglass boat boom, this Canadian-designed cruiser emerged from Grampian Marine's focus on creating affordable family sailboats for the growing recreational sailing market. The design reflects the practical sensibilities of its era, emphasizing solid construction and straightforward sailing characteristics over cutting-edge performance. With its moderate proportions and traditional hull form, the Grampian 30 appeals to sailors seeking a reliable coastal cruiser capable of comfortable weekend trips and extended seasonal cruising. The boat's design philosophy prioritizes seaworthiness and interior volume, making it well-suited for couples or small families venturing into near-shore waters. Grampian Marine built a reputation for producing honest, workmanlike vessels that delivered good value for budget-conscious sailors. This model continues that tradition, offering adequate performance under sail while providing the kind of predictable handling that builds confidence in developing sailors. The interior layout typically maximizes living space within the hull's dimensions, creating a practical environment for extended time aboard. While not designed for racing or offshore passages, the Grampian 30 serves well as an entry-level cruiser for those learning the ropes of sailboat ownership and coastal exploration.

Market Price Estimate Beta
Small sample size. This estimate is based on fewer than 5 listings and may not be representative of the true market. Use with caution.
$3,000 – $5,000
typical asking price
Median $3,000  ·  3 listings used
All listings
$3,000 – $5,000 3
Rate a listing price
$
About this estimate
  • Prices are based on recent asking prices from public listings — not actual sale prices, which are typically lower.
  • Condition is not factored in. A well-maintained boat with new sails and engine can be worth significantly more than a project boat of the same model.
  • Location affects price. Boats in landlocked states or areas with fewer buyers often sell for less than those on the coast.
  • Year of manufacture is not filtered. Older examples of this model will generally be priced lower than newer ones.
  • Included equipment varies widely. A boat with a full suite of electronics, dodger, and new standing rigging may command a large premium.
  • Outliers are automatically excluded using statistical filtering to improve accuracy, but some bad data may remain.
Core Dimensions
LOA (Length Overall) 29.75 ft / 9.07 m
LWL (Waterline Length) 25.50 ft / 7.77 m
Beam 9.50 ft / 2.90 m
Max Draft 4.67 ft / 1.42 m
Displacement 8,600.00 lb / 3,901 kg
Ballast 3,870.00 lb / 1,755 kg
Sail Area (Reported) 425.00 ft² / 39.48 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer Alex McGruer
Builder Grampian Marine Ltd.
First Built 1969
Last Built 1977
Related Sailboats Pearson 30 · Scampi 30 4 · San Juan 30 · Carter 30 · Seidelmann 30
Owner Reviews

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Performance Ratios
PHRF Rating PHRF (Performance Handicap Racing Fleet) is a national racing handicap measured in seconds per nautical mile. Lower values indicate faster boats. Ratings are sourced from US Sailing's national database (median across 60+ regional fleets).
Under 0 — Ultralight racer0–90 — Performance racer90–150 — Cruiser/racer150–210 — Typical cruiserOver 210 — Heavy/slow cruiser
192
SA/Displacement Sail Area to Displacement ratio measures how much sail power a boat has relative to its weight. Higher values mean more performance and speed.
Under 14 — Heavy cruiser, slow14–18 — Cruising sailboat18–22 — Cruiser/racerOver 22 — Performance racer
16.25
Comfort Ratio Ted Brewer's Comfort Ratio predicts how comfortable a boat will feel in offshore conditions. Higher values mean a steadier, more comfortable motion in a seaway.
Under 20 — Uncomfortably rough20–30 — Acceptable coastal30–40 — Good offshore comfortOver 40 — Very comfortable offshore
24.74
Capsize Screening Formula The USHS Capsize Screening Formula estimates offshore capsize risk. Lower is safer — values under 2.0 are considered acceptable for offshore sailing.
Under 2.0 — Safe for offshore2.0–2.2 — Borderline offshoreOver 2.2 — Coastal use recommended
1.86
Hull Speed Hull Speed is the theoretical maximum speed of a displacement hull, calculated from waterline length. Most cruising sailboats reach this speed in moderate conditions. 6.77
S# (Speed Number) The Speed Number (S#) is a quick performance index. Higher values indicate a faster, more powerful design relative to its size.
Under 3.0 — Slow cruiser3.0–5.0 — Average cruiser5.0–7.0 — Performance cruiserOver 7.0 — Racer
2.13
Pounds/Inch Immersion Pounds per Inch Immersion (PPI) tells you how much weight is needed to sink the boat one inch. Useful for calculating how additional gear and stores affect waterline. 865.59
Rig Dimensions
I (Foretriangle Height) 36.9
J (Foretriangle Base) 11.0
P (Mainsail Luff) 31.0
E (Mainsail Foot) 12.0
SA Fore 202.95
SA Main 186.0
How It Compares

vs. Carter 30, Pearson 30, San Juan 30, Scampi 30 4, Seidelmann 30

This boat Similar boats
Dimensions
LOA
Grampian 30 ★
29.8 ft
Carter 30
29.8 ft
Pearson 30
29.8 ft
San Juan 30
29.9 ft
Scampi 30 4
29.8 ft
Seidelmann 30
29.8 ft
LWL
Grampian 30 ★
25.5 ft
Carter 30
23.0 ft
Pearson 30
25.0 ft
San Juan 30
23.7 ft
Scampi 30 4
23.0 ft
Seidelmann 30
25.0 ft
Beam
Grampian 30 ★
9.5 ft
Carter 30
10.1 ft
Pearson 30
9.5 ft
San Juan 30
10.1 ft
Scampi 30 4
9.8 ft
Seidelmann 30
12.0 ft
Displacement
Grampian 30 ★
8 lbs
Carter 30
7 lbs
Pearson 30
8 lbs
San Juan 30
7 lbs
Scampi 30 4
7 lbs
Seidelmann 30
9 lbs
Ballast
Grampian 30 ★
3 lbs
Carter 30
2 lbs
Pearson 30
3 lbs
San Juan 30
3 lbs
Scampi 30 4
2 lbs
Seidelmann 30
4 lbs
Sail Area
Grampian 30 ★
425 sq ft
Carter 30
384 sq ft
Pearson 30
445 sq ft
San Juan 30
402 sq ft
Scampi 30 4
374 sq ft
Seidelmann 30
Performance
PHRF Rating (lower = faster)
Grampian 30 ★
192 s/nm
Carter 30
174 s/nm
Pearson 30
174 s/nm
San Juan 30
168 s/nm
Scampi 30 4
Seidelmann 30
162 s/nm
SA / Displacement (higher = more powerful)
Grampian 30 ★
16.3
Carter 30
16.4
Pearson 30
17.4
San Juan 30
17.3
Scampi 30 4
16.0
Seidelmann 30
Ballast / Disp (higher = stiffer)
Grampian 30 ★
Carter 30
40.8 %
Pearson 30
42.8 %
San Juan 30
Scampi 30 4
Seidelmann 30
47.9 %
Comfort Ratio (higher = more comfortable offshore)
Grampian 30 ★
24.7
Carter 30
20.8
Pearson 30
24.3
San Juan 30
20.2
Scampi 30 4
21.4
Seidelmann 30
Capsize Screening (lower = safer)
Grampian 30 ★
1.86
Carter 30
2.08
Pearson 30
1.88
San Juan 30
2.09
Scampi 30 4
2.03
Seidelmann 30
Displacement / Length (lower = lighter)
Grampian 30 ★
Carter 30
267
Pearson 30
237
San Juan 30
Scampi 30 4
Seidelmann 30
268
Hull Speed
Grampian 30 ★
6.8 kts
Carter 30
6.4 kts
Pearson 30
6.7 kts
San Juan 30
6.5 kts
Scampi 30 4
6.4 kts
Seidelmann 30
Speed Number (higher = faster)
Grampian 30 ★
2.1
Carter 30
2.0
Pearson 30
2.3
San Juan 30
2.3
Scampi 30 4
1.9
Seidelmann 30
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