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Seller's Description

WELL MAINTAINED, EXTREMELY LIGHT USE & COMFORTABLE A Classic pocket cruiser with much more elbow room than you would expect. She will take you just about anywhere you would want to go in comfort and safety and with surprising performance. The 27 is the perfect family cruiser with room to sleep 4 - 6. She has a nice sized head with hot/cold pressure water, complete galley, and a fold-up table that is not crowding the saloon when not needed. Her cockpit is huge with room to sail, entertain or snooze. And, Island Packets hold their value so well. She is equipped and ready to provide a great getaway to your favorite Gunkhole or down the ICW to Paradise. 2 Last interior photos from IP27’ brochure

Equipment: Hot and Cold Pressure Water Portable AC Unit Origo Non-Pressure 2-Burner Alcohol Stove-Top Jabsco Toilet Seagull Water Filter Screens for all ports Manuals including Island Packet Owner’s Manual

Electrical: a 1985 Island Packet 27 has both a 12V Ship’s and a 120V Shorepower electrical systems. 2 Separate Battery Banks with 1 Group 29 Start & 2 Group 29 House Batteries Battery Charger Alternator 50’ Shorepower Cable 50 Watt Solar Panel Hot Water Heater ‘18 Electronics and Navigation Equipment Electronics and Navigation Equipment Ritchie Compass at Binnacle Garmin 441 Chartplotter Knotmeter, Depthfinder & Wind Instruments Autohelm Autopilot with Remote VHF Radio Sails and Rigging: Rainbow has a single spreader, high-aspect-ratio sloop rig. Mainsail with Dutchman Furling System Boom Vang Custom Adjustable Coach Roof Traveler with Cam Cleats and Lines Led Aft Mainsail Cover Roller Furling Headsail 150% Genoa with Sail Bag 110% Genoa (Original) 2 Lewmar & 1 Aluminum Winch Handles Asymmetrical Cruising Spinnaker Whisker Pole Harken Headsail Furling Barrient 1233 ST - 2 Speed Primary Winches Lewmar 7 ST - Halyard & Mainsheet Winches on Cabin Top Lewmar 7 - Halyard Mast Mounted Winches Boom Vang Deck and Hull Build and Equipment: All Island Packets have a solid glass hull with an integral bowsprit and full keel. The deck is synthetically cored with a diamond non-skid surface. Island Packet used a light, cream-colored gel coat that is easy on the eyes. Custom Dinghy Davits Dodger Bimini Connecting Panel Custom Winter Cover Lofran Manual Anchor Windlass CQR Anchor with 50’ Chain and 75’ 3-Strand Nylon Rode Danforth Anchor with Chain and 3-Strand Nylon Rode Anchor

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Specs

Designer
Robert K. Johnson
Builder
Island Packet Yachts
Associations
?
# Built
?
Hull
Monohull
Keel
Long
Rudder
?
Construction
FG

Dimensions

Length Overall
52 1 / 15.9 m
Waterline Length
98 5 / 30 m
Beam
32 9 / 10 m
Draft
9 10 / 3 m
Displacement
44,150 lb / 20,026 kg
Ballast
16,000 lb / 7,257 kg (Lead)

Rig and Sails

Type
Cutter
Reported Sail Area
1,234′² / 114.6 m²
Total Sail Area
1,058′² / 98.3 m²
Mainsail
Sail Area
480′² / 44.6 m²
P
49 2 / 15 m
E
19 5 / 5.9 m
Air Draft
63 5 / 19.4 m
Foresail
Sail Area
578′² / 53.7 m²
I
59 3 / 18.1 m
J
19 5 / 5.9 m
Forestay Length
62 4 / 19 m

Auxilary Power

Make
?
Model
?
HP
110
Fuel Type
Diesel
Fuel Capacity
300 gal / 1,136 l
Engine Hours
?

Accomodations

Water Capacity
300 gal / 1,136 l
Holding Tank Capacity
?
Headroom
?
Cabins
?

Calculations

Hull Speed
9.8 kn
Classic: 8.8 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

9.81 knots
Classic formula: 8.8 knots
Sail Area/Displacement
15.8
<16: under powered

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.
15.81
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
36.2
<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

36.24
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
244.9
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
244.88
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
39.0
30-40: moderate bluewater cruising 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
38.95
<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
1.7
<2.0: better suited for ocean passages

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
1.73
<2: better suited for ocean passages
>2: better suited for coastal cruising

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