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Island Packet Model Information

Model  :  
General    ::    Docs    ::    Specs    ::    Rigging

Note: All Island Packet models are subject to specification changes (dimensions, capacities, ratings, equipment, etc.) during their production life. The specifications given here are representative and should be used for general comparison only.

General Information For The IP31
Island Packet 31
Since its introduction the Island Packet 31 has been recognized as a cruising classic thanks to the highly successful and acclaimed Island Packet design concept that combines a broad beamed, modern full keel hull with handsome traditional styling and a generous yet easily managed rig. The IP31 offers the cruising sailor the unique advantages of spirited performance with excellent control and seakeeping qualities along with spacious accommodations normally found only in much larger yachts.

- from the factory brochure    

Documentation For The IP31
Brochure Spec & Price List Interior Plan

Specifications For The IP31
First Built 1983   LOA 34'-4''   Sail Area 648
Last Built 1989   LOD 30'-7''   Sail I 39'-9''
Number Built 262   LWL 27'-9''   Sail J 14'-9''
Displacement 11000   Beam 11'-6''   Sail P 34'-0''
Ballast 4500   Draft 4'   Sail E 14'-0''
Fuel Cap 25 US gal   Shoal Draft 3' / 7'   D/L Ratio 230
Water Cap 70 US gal   Mast Height 43'-6   SA/D Ratio 21.0
Holding Cap 14 US gal   Diesel HP 27   B/D Ratio 41%
Click here to compare these IP31 specifications with other Island Packet models.

Running Rigging For The IP31
Mainsail Rigging   Staysail Rigging   Other Rigging
Halyard 3/8''x105' XLS   Halyard 5/16''x60' spun dacron   Jib Halyard 3/8''x85' XLS
Sheet 7/16''x58' Trophy   Sheet 3/8''x60' spun dacron   Jib Sheet 7/16''x120' Trophy
Topping Tail 5/16''x27' XLS   Clew - -   Boom Vang 7/16''x40' spun dacron
Topping Wire 1/8''x32' 7x7 wire   Topping Lift 1/4''x60' braid dacron   Reefing Lines 5/16'' spun dacron
            Traveler Control - -
Click here to compare IP31 running rigging with other Island Packet models.

Standing Rigging For The IP31
  Wire Size Loos Gauge Scale Reading
Below 50 F
Scale Reading
50 F to 80 F
Scale Reading
Above 80 F
Upper Stays 1/4'' PT-2 32 34 35
Intermediate Stays - - - - - - - - - -
Aft Lower Stays 1/4" PT-2 32 34 35
Fwd Lower Stays 1/4'' PT-2 32 34 35
Check Stays - - - - - - - - - -
Back Stays 3/16'' PT-2 19 21 22
IMPORTANT : These are MAXIMUM (not to exceed) rigging tensions as measured using the indicated Loos gauges

Check tensions after initial setup of the rigging and after any subsequent adjustments.

Gauge readings may vary from stay to stay of the same type but none should exceed the maximum scale readings listed.

Please visit the Loos website for more information about the PT-2 and PT-3 gauges.

If you are not familiar with the process for tuning your rig please contact a qualified rigger in your area.

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