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Seller's Description

Go to Sailing Texas classifieds for current sailboats for sale Com-Pac 23/IV, 2005 sailboat for sale no 639, the very first Mark IV made. Hull, deck and woodwork in excellent condition.

2011 Yamaha 9.9 hp outboard (electric start and electric tilt), in excellent condition, with 5-gallon fuel tank and new fuel line. Was winterized at end of 2021 season and has not been used this season.

2004 Road King Trail-N-Sail tandem axle galvanized trailer with hydraulic surge brakes in very good roadworthy condition. Mast-raising system built into trailer. Factory installed marine head with holding tank. Was winterized at end 2021 season and has not been used this season. Interior upholstery and fabric covers in excellent condition (sage green) with custom fitted additional closed cell foam topper for v-berth. Closed cell foam cockpit cushions. 13 gallon fresh water tank. Slide out stainless steel sink and slide out shelf with Glomate GM1600 butane single burner stove. Removable factory teak dining table (fits to bulkhead) between bench seats). Four 6 volt batteries (two years old) and Xantex TrueCharge2 40 amp battery charger. 30 amp shore power socket and cord. Misc fenders, docklines, fire extinguishers, life vests, boat hook, paddle, etc included in sale. Raymarine ST1000 tiller pilot with handheld remote. Lowrance HDS-5 gps and depth sounder on swingarm mount. Bimini and dodger in tan Sunbrella canvas. Stainless steel supports, hardware and canvas all in excellent condition. CDI Flexible Furler with Airforce furling jib in excellent condition with tan Sunbrella sewn-on UV cover. Airforce main sail in excellent condition with tan Sunbrella cover. Set up with single feeding points. New bottom paint in May 2022. Boat in the Tidewater Marina in Havre de Grace, MD with slip/winter storage paid until April 15, 2023. Boat and trailer titled and registered in my name in PA - clean titles in hand. Will transfer with bills of sale and signed titles.

SOLD

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Specs

Designer
Clark Mills
Builder
Com-Pac Yachts
Associations
?
# Built
?
Hull
Monohull
Keel
Fin
Rudder
Transom hung
Construction
FG

Dimensions

Length Overall
22 8 / 6.9 m
Waterline Length
20 2 / 6.2 m
Beam
7 10 / 2.4 m
Draft
2 3 / 0.7 m
Displacement
2,900 lb / 1,315 kg
Ballast
1,340 lb / 608 kg

Rig and Sails

Type
Sloop
Reported Sail Area
206′² / 19.1 m²
Total Sail Area
206′² / 19.2 m²
Mainsail
Sail Area
97′² / 9 m²
P
22 8 / 6.9 m
E
8 5 / 2.6 m
Air Draft
?
Foresail
Sail Area
109′² / 10.2 m²
I
25 11 / 7.9 m
J
8 5 / 2.6 m
Forestay Length
27 3 / 8.3 m

Auxilary Power

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

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
?

Calculations

Hull Speed
7.7 kn
Classic: 6.03 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

7.73 knots
Classic formula: 6.03 knots
Sail Area/Displacement
16.2
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.
16.21
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
46.2
>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

46.24
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
156.0
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
156.03
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
13.7
<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
13.65
<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
2.2
>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
2.2
<2: better suited for ocean passages
>2: better suited for coastal cruising

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

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