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Lone Gull Ii

Designer: Maurice Griffiths  ·  Builder: Harry Feltham Ltd.  ·  First built: 1961
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About the Lone Gull Ii

With limited specifications available in public records, the Lone Gull II represents one of those intriguing sailboat designs that has maintained a relatively low profile in the broader boating community. This scarcity of detailed information often indicates either a limited production run or a design that catered to a specific niche market. Based on the naming convention and typical boat classification patterns, this vessel likely falls into the cruising sailboat category, designed for recreational sailing rather than competitive racing. The "II" designation suggests this was either an evolution of an earlier Lone Gull model or part of a small series production. Without comprehensive specifications readily available, prospective buyers should expect to conduct thorough individual vessel inspections and seek documentation directly from current or previous owners. This approach becomes particularly important when evaluating the boat's construction quality, rigging condition, and overall seaworthiness. The limited spec availability doesn't necessarily reflect negatively on the boat's capabilities or build quality. Many smaller production sailboats from certain eras simply weren't as extensively documented as today's mass-produced vessels, yet often represent solid sailing platforms with character and craftsmanship that larger manufacturers sometimes lack.

Core Dimensions
LOA (Length Overall) 28.00 ft / 8.53 m
LWL (Waterline Length) 24.00 ft / 7.32 m
Beam 9.00 ft / 2.74 m
Max Draft 3.30 ft / 1.01 m
Displacement 11,500.00 lb / 5,216 kg
Ballast 4,200.00 lb / 1,905 kg
Sail Area (Reported) 390.00 ft² / 36.23 m²
Design & Construction
Hull Type Twin Keel
Rigging Type Masthead Sloop
Construction Wood
Designer Maurice Griffiths
Builder Harry Feltham Ltd.
First Built 1961
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Performance Ratios
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
12.29
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
37.78
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
1.6
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. 6.56
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. 771.79
How It Compares

vs. Cal 28, Great Dane 28, Impala 28 Thomas, Pied Piper 28, Southerly 28

This boat Similar boats
Dimensions
LOA
Lone Gull Ii ★
28.0 ft
Cal 28
28.0 ft
Great Dane 28
28.0 ft
Impala 28 Thomas
28.0 ft
Pied Piper 28
28.0 ft
Southerly 28
28.0 ft
LWL
Lone Gull Ii ★
24.0 ft
Cal 28
22.5 ft
Great Dane 28
21.3 ft
Impala 28 Thomas
23.2 ft
Pied Piper 28
21.3 ft
Southerly 28
24.0 ft
Beam
Lone Gull Ii ★
9.0 ft
Cal 28
9.0 ft
Great Dane 28
8.2 ft
Impala 28 Thomas
9.3 ft
Pied Piper 28
8.8 ft
Southerly 28
9.0 ft
Displacement
Lone Gull Ii ★
11 lbs
Cal 28
6 lbs
Great Dane 28
8 lbs
Impala 28 Thomas
4 lbs
Pied Piper 28
8 lbs
Southerly 28
8 lbs
Ballast
Lone Gull Ii ★
4 lbs
Cal 28
2 lbs
Great Dane 28
3 lbs
Impala 28 Thomas
Pied Piper 28
2 lbs
Southerly 28
Sail Area
Lone Gull Ii ★
390 sq ft
Cal 28
352 sq ft
Great Dane 28
Impala 28 Thomas
335 sq ft
Pied Piper 28
345 sq ft
Southerly 28
Performance
PHRF Rating (lower = faster)
Lone Gull Ii ★
Cal 28
204 s/nm
Great Dane 28
210 s/nm
Impala 28 Thomas
Pied Piper 28
246 s/nm
Southerly 28
SA / Displacement (higher = more powerful)
Lone Gull Ii ★
12.3
Cal 28
17.1
Great Dane 28
Impala 28 Thomas
20.3
Pied Piper 28
13.4
Southerly 28
Comfort Ratio (higher = more comfortable offshore)
Lone Gull Ii ★
37.8
Cal 28
20.6
Great Dane 28
Impala 28 Thomas
13.9
Pied Piper 28
31.0
Southerly 28
27.9
Capsize Screening (lower = safer)
Lone Gull Ii ★
1.60
Cal 28
1.98
Great Dane 28
Impala 28 Thomas
2.28
Pied Piper 28
1.72
Southerly 28
1.77
Displacement / Length (lower = lighter)
Lone Gull Ii ★
Cal 28
Great Dane 28
391
Impala 28 Thomas
154
Pied Piper 28
Southerly 28
274
Hull Speed
Lone Gull Ii ★
6.6 kts
Cal 28
6.4 kts
Great Dane 28
Impala 28 Thomas
6.5 kts
Pied Piper 28
6.2 kts
Southerly 28
6.6 kts
Speed Number (higher = faster)
Lone Gull Ii ★
Cal 28
2.3
Great Dane 28
Impala 28 Thomas
3.8
Pied Piper 28
Southerly 28
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