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Seller's Description

Hunter 31, 1984 Sale: $16,200 Docked: Kemah, Texas

LOA: 31’3” Beam: 10’3” Draft: 5’4” Fin Keel Inboard YANMAR 2gmf Diesel Engine Current: U.S. Coast Guard Documentation & Texas Parks & Wildlife Registration

2018-2019 UPGRADES:

New Bottom paint job New Galley sink, fixtures & water pump Three 12v Batteries Depth finder Bilge Pump & switch Stereo with remote & new antenna

2015-2017 UPGRADES:

New Exhaust Elbow GUEST battery charger GARMIN 78-SC GPS VHF Radio & Antenna Standing Rigging Lazy Jacks for Main Sail Shaft & CUTLASS Bearing All Thru Hulls & Valves Fuel Tank, Lines, Gauge, & Sending Unit Duel RACO Fuel Filters Auto Helm 3000

ADDITIONAL FEATURES & INFORMATION:

Porta-Potty in Head Refrigerator & Microwave (AC current) Full Bottom Job cleaning with new paint (2019) Consistent cleaning of bottom every 3 months since ownership (2013) Currently docked at the KEMAH BOARDWALK MARINA

Boat sails good; Engine runs well – Doesn’t use any oil; Boat has no issues

Ready to Sell

or phone 832-541-2935

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Specs

Designer
Cortland Steck
Builder
Hunter Marine
Associations
?
# Built
?
Hull
Monohull
Keel
Fin
Rudder
Spade
Construction
FG

Dimensions

Length Overall
31 3 / 9.6 m
Waterline Length
26 2 / 8 m
Beam
10 11 / 3.3 m
Draft
5 3 / 1.6 m
Displacement
9,700 lb / 4,400 kg
Ballast
4,000 lb / 1,814 kg

Rig and Sails

Type
Sloop
Reported Sail Area
458′² / 42.6 m²
Total Sail Area
458′² / 42.5 m²
Mainsail
Sail Area
206′² / 19.1 m²
P
37 5 / 11.4 m
E
10 11 / 3.4 m
Air Draft
47 4 / 14.4 m
Foresail
Sail Area
252′² / 23.4 m²
I
41 11 / 12.8 m
J
12 0 / 3.7 m
Forestay Length
43 8 / 13.3 m

Auxilary Power

Make
Yanmar
Model
?
HP
16
Fuel Type
Diesel
Fuel Capacity
18 gal / 68 l
Engine Hours
?

Accomodations

Water Capacity
33 gal / 125 l
Holding Tank Capacity
?
Headroom
?
Cabins
?

Calculations

Hull Speed
7.7 kn
Classic: 6.87 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

7.7 knots
Classic formula: 6.87 knots
Sail Area/Displacement
16.1
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.
16.11
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
41.2
>40: stiffer, more 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

41.23
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
239.5
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
239.5
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
22.2
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
22.18
<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
2.05
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

Shoal draft: 4.0’/1.22m
Disp. (Shoal draft): 9900 lbs/4494 kg

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

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