Detailed sailboat specifications and datasheets since 2015
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Catalina 310 (Fin keel) vs Catalina 310 (Wing keel)

Main featuresCatalina 310 Fin keelCatalina 310 Wing keel
Model
Catalina 310
Catalina 310
Version
Fin keel
Wing keel
Hull type
Monohull
Monohull
Category
Cruising sailboat
Cruising sailboat
Sailboat builder
Catalina Yachts
Catalina Yachts
Sailboat designer
Country
United States
United States
Construction
Hull and deck: GRP (glass reinforced polyester)
Hull and deck: GRP (glass reinforced polyester)
First built hull
1999
1999
Last built hull
2012
2012
Award(s)
  • 2000: Cruising World - Boat of the Year: Pocket Cruiser
    • 2000: Cruising World - Boat of the Year: Pocket Cruiser
      Appendages
      Keel : L-shaped keel (with bulb)
      Keel : wing keel
      Helm
      Single helm wheel
      Single helm wheel
      Rudder
      Single spade rudder
      Single spade rudder
      Unsinkable
      No
      No
      Trailerable
      No
      No
      EC design category
       iThe CE design category indicates the ability to cope with certain weather conditions (the sailboat is designed for these conditions)

      A: Wind < force 9, Waves < 10m
      B: Wind < force 8, Waves < 8m
      C: Wind < force 6, Waves < 4m
      D: Wind < force 4, Waves < 0,5m
      A
      A
       
      Main dimensionsCatalina 310 Fin keelCatalina 310 Wing keel
      Hull length
      31’ 1”9.49 m
      31’ 1”9.49 m
      Waterline length
      26’ 6”8.08 m
      26’ 6”8.08 m
      Beam (width)
      11’ 6”3.51 m
      11’ 6”3.51 m
      Draft
      5’ 8”1.75 m
      4’1.22 m
      Light displacement (MLC)
      10701 lb4854 kg
      10300 lb4672 kg
      Ballast weight
      4400 lb1996 kg
      3999 lb1814 kg
      Ballast type
      Lead
      Lead
       
      Rig and sailsCatalina 310 Fin keelCatalina 310 Wing keel
      Upwind sail area
      490 ft²45.52 m²
      490 ft²45.52 m²
      Rigging type
      Sloop Marconi masthead
      Sloop Marconi masthead
      Mast configuration
      Keel stepped mast
      Keel stepped mast
      Rotating spars
      No
      No
      Number of levels of spreaders
      2
      2
      Spreaders angle
      0 °
      0 °
      Spars construction
      Aluminum spars
      Aluminum spars
      Standing rigging
      1x19 strand wire
      1x19 strand wire
       
      PerformancesCatalina 310 Fin keelCatalina 310 Wing keel
      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.
      171 ft²/T15.88 m²/T
      175 ft²/T16.29 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.
      261
      251
      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.
      41 %
      39 %
      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.
      6.90 knots
      6.90 knots
       
      Auxiliary engineCatalina 310 Fin keelCatalina 310 Wing keel
      Engine(s)
      1 inboard engine
      1 inboard engine
      Engine(s) power
      26 HP
      26 HP
      Fuel type
      Diesel
      Diesel
      Fuel tank capacity
      20.1 gal76 liters
      20.1 gal76 liters
       
      Accommodations and layoutCatalina 310 Fin keelCatalina 310 Wing keel
      Cockpit
      Open aft cockpit
      Open aft cockpit
      Cabin(s)
      2
      2
      Berth(s) (min./max.)
      4 / 6
      4 / 6
      Head(s)
      1
      1
      Freshwater tank capacity
      54.9 gal208 liters
      54.9 gal208 liters
      Holding tank capacity
      20.1 gal76 liters
      20.1 gal76 liters
       
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