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Catalina 30 MkII Wing keel

Sailboat specifications

The Catalina 30 MkII is a 29’11” (9.12m) cruising sailboat designed by Frank Butler (United States). She was built between 1986 and 1991 by Catalina Yachts (United States). The Wing keel version is offered with a short keel fitted with large winglets. This configuration provides an interesting draft / low center of gravity / upwind performance trade-off.

The Catalina 30 MkII is as well listed, on Boat-Specs.com, in Fin keel and Tall rig version (see all the versions compared).

Catalina 30 MkII's main features

Model
Catalina 30 MkII
Version
Wing keel
Hull type
Monohull
Category
Cruising sailboat
Sailboat builder
Sailboat designer
Country
United States
Construction
Hull and deck: GRP (glass reinforced polyester)
First built hull
1986
Last built hull
1991
Appendages
Keel : wing keel
Helm
Single helm wheel
Rudder
Single spade rudder
Unsinkable
No
Trailerable
No
Standard public price ex. VAT (indicative only)
N/A

Catalina 30 MkII's main dimensions

Hull length
29’ 11”9.12 m
Waterline length
25’7.62 m
Beam (width)
10’ 10”3.3 m
Draft
3’ 10”1.17 m
Light displacement (MLC)
10300 lb4672 kg
Ballast weight
4299 lb1950 kg
Ballast type
Cast iron

Catalina 30 MkII's rig and sails

Upwind sail area
446 ft²41.43 m²
I
 iFore triangle height (from mast foot to fore stay top attachment)
41’12.5 m
J
 iFore triangle base (from mast foot to bottom of forestay)
11’ 6”3.51 m
P
 iMainsail hoist measurement (from tack to head)
35’10.67 m
E
 iMainsail foot measurement (from tack to clew)
11’ 6”3.51 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 30 MkII'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.
160 ft²/T14.82 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.
299
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.
42 %
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.
6.70 knots

Catalina 30 MkII's auxiliary engine

Engine(s)
1 inboard engine

Catalina 30 MkII's accommodations and layout

Cockpit
Closed aft cockpit
Cabin(s)
2
Berth(s) (min./max.)
4 / 6
Head(s)
1
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