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Seller's Description

Shallow draft Low engine hours

AC

Never used asymmetrical spinnaker

Bimini/Windshield (Bimini new 2018)

Electric head (New 2019)

New wind transducer 2019

New gas grill 2019

New TV on swing panel

Equipment: ELECTRICAL 110 v AC 12 v DC

30 amp shore power outlet

30 amp shore power cord

2 4D house batteries

Charles 15 amp battery charger

Dehumidifier

ELECTRONICS Raymarine ST 60 Depth Sounder Raymarine ST 60 Speed

Raymarine ST 60 Wind and Direction

Standard Horizon Plotter/GPS model 180 i

Simrad WP 30 Autopilot

Standard Horizon VHF plus Ram mic at helm

Compass

Clarton AM/FM/CD Player

Bose cockpit and cabin speakers

Sails and Deck In-mast furling main Roller furling genoa

Never used custom UK Sailmakers asymmetric spinnaker and sock

Spinnaker halyard

Electric windlass

Cockpit table

Cockpit shower

Cockpit cushions by BottomSiders

Swim latter

Bimini

Windshield

Cover for windshield

Last bottom paint 2017 maintained monthly by diver

Cockpit cooler with cushion for helm 2019

Second anchor added 2019

New dock lines 2019

New fender

Dinghy

Torqueedo electric outboard (Travel 503)

Galley Hilleranee 2-burner propane stove with oven Alder Barbour 12v Refrigeration-front and top loading

Danby Microwave

Hot and Cold Pressure water

Mechanical Ocean Air AC Electric Bilge pump

Manual Bilge pump

Exclusions Owner’s tools Liquor

Personal items

Some bedding

Anything not specifically listed herein

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Specs

Designer
Gerry Douglas
Builder
Catalina Yachts
Association
Catalina 310 Owners Association
# Built
?
Hull
Monohull
Keel
Fin + Bulb
Rudder
Spade
Construction
FG

Dimensions

Length Overall
31 0 / 9.5 m
Waterline Length
31 0 / 9.5 m
Beam
10 11 / 3.4 m
Draft
4 0 / 1.2 m
Displacement
10,300 lb / 4,672 kg
Ballast
4,000 lb / 1,814 kg (Lead)

Rig and Sails

Type
Sloop
Reported Sail Area
493′² / 45.8 m²
Total Sail Area
493′² / 45.8 m²
Mainsail
Sail Area
242′² / 22.5 m²
P
37 2 / 11.4 m
E
12 11 / 4 m
Air Draft
46 9 / 14.3 m
Foresail
Sail Area
251′² / 23.3 m²
I
42 8 / 13 m
J
11 8 / 3.6 m
Forestay Length
44 3 / 13.5 m

Auxilary Power

Make
Yanmar
Model
3GM30F
HP
27
Fuel Type
Diesel
Fuel Capacity
27 gal / 102 l
Engine Hours
?

Accomodations

Water Capacity
35 gal / 132 l
Holding Tank Capacity
?
Headroom
?
Cabins
2

Calculations

Hull Speed
7.7 kn
Classic: 6.9 kn

Hull Speed

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Formula

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio.311
Hull Speed = Max Speed/Length ratio x √LWL

7.67 knots
Classic formula: 6.9 knots
Sail Area/Displacement
16.7
16-20: good performance

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

Formula

SA/D = SA ÷ (D ÷ 64)2/3

  • SA: Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
  • D: Displacement in pounds.
16.66
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
38.8
<40: less stiff, less powerful

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Formula

Ballast / Displacement * 100

38.83
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
246.8
200-275: moderate

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

Formula

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

  • D: Displacement of the boat in pounds.
  • LWL: Waterline length in feet
246.83
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
21.9
20-30: coastal cruiser

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Formula

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)

  • D: Displacement of the boat in pounds
  • LWL: Waterline length in feet
  • LOA: Length overall in feet
  • Beam: Width of boat at the widest point in feet
21.89
<20: lightweight racing boat
20-30: coastal cruiser
30-40: moderate bluewater cruising boat
40-50: heavy bluewater boat
>50: extremely heavy bluewater boat
Capsize Screening
2.1
>2.0: better suited for coastal cruising

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

Formula

CSV = Beam ÷ ³√(D / 64)

  • Beam: Width of boat at the widest point in feet
  • D: Displacement of the boat in pounds
2.12
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

Wing Keel draft: 4.83’/1.47m

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