Seller's Description
SOLD for $3,000 We are the 2nd owners of this sailboat. Purchased from a couple that didn’t like healing, virtually new in 1996. Sailed Iowa, Nebraska, Kansas, Long Island Sound, Marblehead and finally moved to Maryland in 2000. Kept in the water for a couple of years in Pasadena, then trailer launched from Sandy Point for many years. Back in the water in 2018. Has had rain leaks over the years and they have all been fixed now, though the cabin woodwork could be replaced, potholes don’t look great, but no longer leak. Still sailing when it’s warm (last time was Feb 23rd) but my slip is up April 14th. The trailer is NOT included, it was stolen in 2018 (long story). Racing on a 10 metre C&C and decided to get a much bigger (33 foot) sailboat.
Full mfg. description at: http://www.precisionboatworks.com/boats/p21/index.php
From wikipedia: The Precision 21 is a recreational keelboat, built predominantly of fiberglass, with wood trim. It has a fractional sloop rig, a raked stem, a plumb transom, a transom-hung rudder controlled by a tiller and a fixed stub keel with a retractable centerboard that has a NACA airfoil profile. It displaces 1,875 lb (850 kg) and carries 600 lb (272 kg) of ballast.139
The boat has a draft of 4.67 ft (1.42 m) with the centerboard extended and 1.75 ft (0.53 m) with it retracted, allowing operation in shallow water, or ground transportation on a trailer.13
The boat is normally fitted with a small 3 to 6 hp (2 to 4 kW) outboard motor for docking and maneuvering.13
The design has sleeping accommodation for four people, with a double “V”-berth in the bow cabin and two straight settee berths in the main cabin. The galley is located on the port side just aft of the bow cabin. The galley is equipped with a stove and a sink. The head is located in the bow cabin under the “V”-berth. Cabin headroom is 52 in (132 cm).13
The design has a PHRF racing average handicap of 270 and a hull speed of 5.6 kn (10.4 km/h).3
Equipment: New since 2021 Thetford Porta-Potti Forward hatch Life lines Fuel tank and line Plexiglass companionway 1996 Evinrude E8RLEDS 8.0 Outboard serviced Bimini cover
Original Add-ons: Shore Power (really) Bimini custom cockpit cushions
Specs
- Designer
- Jim Taylor
- Builder
- Precision Boat Works
- Associations
- ?
- # Built
- ?
- Hull
- Monohull
- Keel
- Stub + Centerboard
- Rudder
- ?
- Construction
- FG
Dimensions
- Length Overall
- 20′ 11″ / 6.4 m
- Waterline Length
- 17′ 5″ / 5.3 m
- Beam
- 8′ 0″ / 2.4 m
- Draft
- 1′ 8″ / 0.5 m — 0′ 11″ / 0.3 m
- Displacement
- 1,870 lb / 850 kg
- Ballast
- 600 lb / 272 kg
Rig and Sails
- Type
- Sloop
- Reported Sail Area
- 203′² / 18.9 m²
- Total Sail Area
- 192′² / 17.8 m²
Mainsail
- Sail Area
- 113′² / 10.5 m²
- P
- 23′ 8″ / 7.2 m
- E
- 9′ 6″ / 2.9 m
- Air Draft
- 29′ 11″ / 9.1 m
Foresail
- Sail Area
- 79′² / 7.4 m²
- I
- 22′ 8″ / 6.9 m
- J
- 6′ 11″ / 2.1 m
- Forestay Length
- 23′ 9″ / 7.2 m
Auxilary Power
- Make
- ?
- Model
- ?
- HP
- ?
- Fuel Type
- ?
- Fuel Capacity
- ?
- Engine Hours
- ?
Accomodations
- Water Capacity
- ?
- Holding Tank Capacity
- ?
- Headroom
- ?
- Cabins
- ?
Calculations
- Hull Speed
-
7.2 kn
Classic: 5.6 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
-
21.4
>20: high 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.
- Ballast/Displacement
-
32.0
<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
-
156.5
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
-
9.4
<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
-
2.7
>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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