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Seller's Description

This vessel is an outstanding example of a well maintained and cared for Catalina 309. She is easy to handle, has roomy accommodations and is winged keeled shoal draft.The Gerry Douglas designed vessel received Cruising Worlds Domestic Boat of the Year award. Some of the outstanding features of the 309 are the aft cabin, on the starboard side, where a double berth fits under the cockpit. To port, the galley has plenty of counter space and storage, with an under the counter refrigeration unit. Opposite the galley is an aft-facing chart table served by the end of the starboard settee. The switch panel is mounted on the outboard partition, with space above it and on the aft-cabin bulkhead for other electronics. Forward, the V-berth expands to a double with a filler panel, and just aft and to port is a nice sized head. On the starboard side, a low hanging locker topped with a broad, fiddled shelf adds to the saloons openness. In the saloon, the center of the starboard settees backrest flips down for a handy table. The dining table is to port, next to the L-shaped settee.A large, hinged table leaf opens to meet the starboard settee. The engine is under a removable box that is part of the companionway steps. All in all this is a well thought and roomy 31 footer that Catalina and Gerry Douglas designed.

Equipment: Yanmar Y3M20/under 1000 hours New (2024) Sunbrella helm cover, bimini and dodger top Re-rigged by Gulf Coast Rigging (April 2023): new shrouds, stays, vhf antenna and coax to radio, LED anchor and steaming lights, wind vane and new main halyard: New England Ropes VIPER Performance Cruising Line - 8 mm Garmin 942 chart-plotter with Navpod and Garmin GT15M-IH In-Hull depth transducer Standard Horizon GX2200 radio with built in GPS and AIS receiver Standard Horizon RAM3 Remote Station Mic 160 Watt 12 Volt Monocrystalline Solar Panel RICH SOLAR 20 Amp MPPT Solar Charge Controller Interior LED lights Deck light LED Balmer Smartgauge battery monitor Marinco Ventilation 4” Stainless Steel Day/Night Solar Vent House battery Group Size 4DLT (2023) Second battery Group 31 (2023) Blue Sea Systems SI-ACR Automatic Charging Relay with Start Isolation Blue Sea Systems P12 Battery Charger Raymarine ST60 Wind Instrument Raymarine Depth Gauge Raymarine 4000 Mk2 Wheel Drive 30 amp SmartPlug shore power inlet connection and shore power cable. Poly Planar MRD-60 Marine AM / FM / CD / MP3 Receiver Replaced lifelines (2023) with 6mm STS-HSR Heat-Set Dyneema Single Braid Ullman Sails mainsail stack-pack with lazy jacks/2015 Furling jib/2015 Rodkicker Mermaid A/C unit (runs off of shore power) Whale manual emergency bilge pump Hillerange gimbaled propane stove with oven /Magma Marine Kettle gas grill Isotherm refrigerator Proctor Silex Microwave Oven Dual height main salon table Main salon fixed port accordion shades Stern perch seats Cockpit seat cushions Foldable helm wheel Screens for ports and companionway Collapsing swim ladder Cockpit/transom shower faucet Walk-through transom May 2021 bottom painted with Cukote semi-hard ablative. Wing keel 4ft 4inch draft

Specs

Designers
?
Builders
?
Associations
?
# Built
?
Hull
Monohull
Keel
?
Rudder
?
Construction
?

Dimensions

Length Overall
31 0 / 9.5 m
Waterline Length
?
Beam
11 6 / 3.5 m
Draft
4 3 / 1.3 m
Displacement
?
Ballast
?

Rig and Sails

Type
?
Reported Sail Area
?
Total Sail Area
?
Mainsail
Sail Area
?
P
?
E
?
Air Draft
?
Foresail
Sail Area
?
I
?
J
?
Forestay Length
?

Auxilary Power

Make
?
Model
?
HP
?
Fuel Type
?
Fuel Capacity
?
Engine Hours
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
2

Calculations

Hull Speed
?

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

?
Classic formula: ?
Sail Area/Displacement
?

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: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
?

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

?
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
?

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
?
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
?

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
?
<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
?

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: better suited for ocean passages
>2: better suited for coastal cruising

This listing is presented by SailboatListings.com. Visit their website for more information or to contact the seller.

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