Catalina 25 Swing keel

Sailboat specifications

The Catalina 25 is a 25’ (7.62m) cruising sailboat designed by Frank Butler (United States). She was built between 1978 and 1994 by Catalina Yachts (United States) with 5866 hulls completed. The Swing keel version adopts an appendage configuration without compromise between draft and performance. The only drawbacks are the space taken inside and the price of the system...

The Catalina 25 is as well listed, on Boat-Specs.com, in Fin keel, Wing keel and Tall rig version (see all the versions compared).

Catalina 25's main features

Model: Catalina 25
Version: Swing keel
Hull type: Monohull
Category: Cruising sailboat
Sailboat builder: Catalina Yachts
Sailboat designer: Frank Butler
Country: United States
Construction: Hull and deck: GRP (glass reinforced polyester)
Number of hulls built: 5866
First built hull: 1978
Last built hull: 1994
Appendages: Lifting keel : swing keel
Helm: Single tiller
Rudder: Single transom hung rudder
Unsinkable: No
Trailerable: No
Standard public price ex. VAT (indicative only): N/A €

Catalina 25's main dimensions

Hull length: 25’7.62 m
Waterline length: 22’ 2”6.76 m
Beam (width): 8’2.44 m
Draft: 5’1.52 m
Draft when appendages up: 2’ 8”0.81 m
Light displacement (M_LC): 4149 lb1882 kg
Ballast weight: 1499 lb680 kg

Catalina 25's rig and sails

Upwind sail area: 270 ft²25.08 m²
I iFore triangle height (from mast foot to fore stay top attachment): 29’8.84 m
J iFore triangle base (from mast foot to bottom of forestay): 10’ 6”3.2 m
P iMainsail hoist measurement (from tack to head): 24’ 8”7.52 m
E iMainsail foot measurement (from tack to clew): 9’ 8”2.95 m
Rigging type: Sloop Marconi masthead
Mast configuration: Deck stepped mast
Rotating spars: No
Number of levels of spreaders: 1
Spreaders angle: 0 °
Spars construction: Aluminum spars
Standing rigging: 1x19 strand wire continuous

Catalina 25's performances

Upwind sail area to displacement iThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds. The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size. Upwind: under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 25 it indicates a fast sailboat.: 177 ft²/T16.45 m²/T
Displacement-length ratio (DLR) iThe Displacement Length Ratio (DLR) is a figure that points out the boat's weight compared to its waterline length. The DLR is obtained by dividing the boat's displacement in tons by the cube of one one-hundredth of the waterline length (in feet). The DLR can be used to compare the relative mass of different sailboats no matter what their length: a DLR less than 180 is indicative of a really light sailboat (race boat made for planning), while a DLR greater than 300 is indicative of a heavy cruising sailboat.: 173
Ballast ratio iThe Ballast ratio is an indicator of stability; it is obtained by dividing the boat's displacement by the mass of the ballast. Since the stability depends also of the hull shapes and the position of the center of gravity, only the boats with similar ballast arrangements and hull shapes should be compared. The higher the ballast ratio is, the greater is the stability.: 36 %
Critical hull speed iAs a ship moves in the water, it creates standing waves that oppose its movement. This effect increases dramatically the resistance when the boat reaches a speed-length ratio (speed-length ratio is the ratio between the speed in knots and the square root of the waterline length in feet) of about 1.2 (corresponding to a Froude Number of 0.35) . This very sharp rise in resistance, between speed-length ratio of 1.2 to 1.5, is insurmountable for heavy sailboats and so becomes an apparent barrier. This leads to the concept of "hull speed". The hull speed is obtained by multiplying the square root of the waterline length (in feet) by 1.34.: 6.31 knots