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Sailboat specifications and datasheets

Catalina 315 wing keel

The Catalina 315, here in "wing keel" version, is a 31’ monohull sailboat designed by Gerry Douglas. She was built by Catalina Yachts (United States) and made of GRP (glass reinforced polyester). The production started in 2012 and has been awarded the title of "Cruising World - Boat of the Year - Category: Inshore Cruiser" in 2013.

The Catalina 315 is as well listed, on Boat-Specs.com, in version Fin keel.

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Catalina 315's   Main Features
Model Catalina 315
Version Wing keel
Type of hull Monohull
Category Cruising sailboat
Shipyard
Designer Gerry Douglas
Award 2013 Cruising World - Boat of the Year - Category: Inshore Cruiser
Construction GRP (glass reinforced polyester)
First built hull 2012
Last built hull Still in production
Appendages Keel :
Wing keel
Helm 1 wheel
Rudder 1 spade rudder
Cockpit Open aft cockpit
Unsinkable No
Trailerable No
EC certification A
Standard public price ex. VAT (indicative only) N/A
Catalina 315's   Main dimensions
Length overall 31’ 11”
Hull length 31’
Waterline length 26’ 6”
Beam (width) 11’ 7”
Draft 4’ 4”
Mast height from DWL 48’ 2”
Light displacement 10600 lbs
Ballast weight 4400 lbs
Ballast type Lead
Catalina 315's   Rig and sails
Upwind sail area 589 sq.ft
Rigging type Sloop Marconi (in-mast furling mainsail) 19/20
Rotating spars No
Mast position Deck stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire
Number of levels of spreaders 2
Spreaders angle 0 °
IiFore triangle height (from mast foot to fore stay attachment) 42’ 8”
JiFore triangle base (from mast foot to bottom of forestay) 11’ 2”
PiMainsail hoist measurement (from tack to head) 38’ 8”
EiMainsail foot measurement (from tack to clew) 13’ 8”
Catalina 315's   Performances
Upwind sail area to displacementiThe 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 23 it indicates a fast sailboat.
19.21
Displacement-Length ratio (DLR)iThe Displacement Length ratio is a figure that points out the boat's weight compared to its waterline length. 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.
258
Ballast ratioiThe Ballast ratio is an indicator of the stability; it is obtained by dividing the boat's displacement by the weight of the ballast. Since the stability depends also of the hull shape and the position of the center of gravity, only boats with similar ballast arrangements and hull shape should be considered.
Higher the ballast ratio is, greater is the stability.
42 %
Hull speediAs 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.
6.90 knots
Catalina 315's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 21 HP
Fuel type Diesel
Fuel tank capacity 26.9 gal
Catalina 315's   Accommodation
Cabin(s) 2
Berth(s) (min/max) 4 / 6
Head(s) 1
Fresh water tank capacity 34.9 gal
Water heater capacity 6.1 gal
Holding tank capacity 16.9 gal

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