Seller's Description
a 1979 J30 sailboat capable of both competitive racing and comfortable cruising. It has an open aft cockpit with tiller steering. Below deck there is an aft galley and port and starboard quarter berths. Forward is a salon with settees then an enclosed head and starboard side hanging locker forward of this is a cabin with a double V berth. Main mast and Boom: Kenyon black anodized aluminum Hull was painted marine blue in 2017 and was in the water once since then in the summer of 2021. Deck and cabin house superstructure were painted in 2017. Non skid deck is painted beige while the balance of the deck is white gloss paint. Teak toe rails, handrails, and louvered teak weatherboards were sanded and varnished in 2017. Jensen CD/AM/FM stereo is located in the salon.
Equipment: Inboard Engine: One Yanmar, 14 HP, Model 2QM15, two cylinder, fresh water cooled, diesel auxiliary engine. Serial# 81822. Engine hours: 664 Transmission: Kanzaki Fuel Tank: One 16 gallon aluminum tank Bilge Pump: One, Rule, 12 Bolt DC, 500 GPH automatic bilge pump. Anchor: An 18-pound Danforth anchor.
07/2020 New tri color light purchased In 2021, a new bilge pump was installed. Also, all new rigging for the sailboat in 2021. 08/2021 Engine repaired. Replaced oil pressure gauge and engine sender re-wore
Electronics Purchased: 07/2020 Tiller with Auto Pilot 11/2020 Raymarine Axion Pro 9 S, 9 Multifunctional Display with built in GPS, Sonar, and WiFi, Raymarine CPT-S Plastic Conical High Chirp ThruHull Sonar Transducer with adapter Raymarine i70s MultiFunction Sailing Instrument Raymarine ITC-5 Integrated Transducer Converter Navionics E-Chart All US and Canada Waters 01/2021 Raymarine Short Arm Vane Wind System with Sensor and 30M Cable Raymarine i70s MultiFunction Sailing Instrument 04/2021 Ancor RG213 Coaxial Cable, 100 Raymarine 5 Cables, and a 5-Way Connector
Specs
- Designer
- Rod Johnstone
- Builder
- J Boats
- Association
- J/30 Class Association
- # Built
- 554
- Hull
- Monohull
- Keel
- Fin
- Rudder
- Transom hung
- Construction
- FG
Dimensions
- Length Overall
- 29′ 11″ / 9.1 m
- Waterline Length
- 25′ 0″ / 7.6 m
- Beam
- 10′ 11″ / 3.4 m
- Draft
- 5′ 2″ / 1.6 m
- Displacement
- 7,000 lb / 3,175 kg
- Ballast
- 2,100 lb / 953 kg
Rig and Sails
- Type
- Sloop
- Reported Sail Area
- 444′² / 41.3 m²
- Total Sail Area
- 444′² / 41.2 m²
Mainsail
- Sail Area
- 247′² / 23 m²
- P
- 37′ 11″ / 11.6 m
- E
- 12′ 11″ / 4 m
- Air Draft
- ?
Foresail
- Sail Area
- 197′² / 18.3 m²
- I
- 34′ 2″ / 10.4 m
- J
- 11′ 6″ / 3.5 m
- Forestay Length
- 36′ 0″ / 11 m
Auxilary Power
- Make
- ?
- Model
- ?
- HP
- 15
- Fuel Type
- Diesel
- Fuel Capacity
- ?
- Engine Hours
- ?
Accomodations
- Water Capacity
- ?
- Holding Tank Capacity
- ?
- Headroom
- ?
- Cabins
- 2
Calculations
- Hull Speed
-
8.0 kn
Classic: 6.7 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
- Sail Area/Displacement
-
19.4
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.
- Ballast/Displacement
-
30.0
<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
- Displacement/Length
-
200.0
100-200: light
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
- Comfort Ratio
-
16.3
<20: lightweight racing boat
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
- Capsize Screening
-
2.3
>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
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