Back to Search
Sage Cat 15
Designer: Jerry Montgomery  ·  Builder: Sage Marine (Usa)  ·  First built: 2016
+ Add to Compare
About the Sage Cat 15

Jerry Montgomery's Sage Cat 15 represents a modern approach to small boat sailing, combining contemporary fiberglass construction with a practical catboat rig configuration. Built by Sage Marine since 2016, this compact 15-footer features a distinctive lifting keel design that opens up shallow water exploration while maintaining reasonable sailing performance. The boat's catboat rig, with its single mast stepped well forward and no jib to manage, makes it particularly appealing for single-handed sailing or family outings where simplicity is valued. At 800 pounds displacement with 225 pounds of ballast, the Sage Cat 15 strikes a balance between trailer-ability and stability on the water. With a lifting keel drawing three feet when fully deployed, this design excels in coastal and inland waters where shoal draft capability is essential. The 6.42-foot beam provides good initial stability, while the moderate comfort ratio of 7.06 suggests adequate motion characteristics for day sailing and short coastal hops. The generous sail area relative to displacement delivers spirited performance in light to moderate conditions, making it well-suited for recreational sailing, sailing instruction, or as a simple weekend escape boat. Its modern construction and thoughtful proportions reflect contemporary small boat design philosophy focused on versatility and ease of handling.

Core Dimensions
LOA (Length Overall) 15.16 ft / 4.62 m
LWL (Waterline Length) 14.50 ft / 4.42 m
Beam 6.42 ft / 1.96 m
Max Draft 3.00 ft / 0.91 m
Min Draft 0.50 ft / 0.15 m
Displacement 800.00 lb / 363 kg
Ballast 225.00 lb / 102 kg
Ballast Type Lead
Sail Area (Reported) 122.00 ft² / 11.33 m²
Design & Construction
Hull Type Lifting Keel
Rigging Type Cat (Marconi)
Construction FG
Designer Jerry Montgomery
Builder Sage Marine (USA)
First Built 2016
Owner Reviews

No owner reviews yet — be the first to share your experience with this boat.

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
 22.69
Ballast/Displacement Ballast to Displacement ratio shows what percentage of the boat's total weight is ballast. Higher values generally mean better initial stability and stiffer sail carrying.
30–35% — Typical cruiser35–45% — Stiff performance boatOver 45% — Racing oriented
 28.13
Displacement/Length Displacement to Length ratio measures how heavy a boat is relative to its waterline length. Lower values mean a lighter, faster boat.
Under 100 — Ultralight racer100–200 — Light cruiser/racer200–300 — Moderate cruiser300–400 — Heavy cruiserOver 400 — Very heavy
 117.15
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
 7.06
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
 2.77
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. 5.10 kn
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. 332.62 pounds/inch
Rig Dimensions
Mast Height (DWL) 22.00 ft / 6.71 m
Find a Sage Cat 15 For Sale
Y YachtWorld Brokerage listings S Sailboat Listings Sailboats only C Craigslist National search F Facebook Marketplace Local listings B boats.com Global marketplace