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Sailboat specifications and datasheets

Island Packet 349

The Island Packet 349 is a 38’4” monohull sailboat designed by Robert Johnson. She was built by Island Packet Yachts (United States) and made of single skin fiberglass / polyester. The production started in 2018 and has been awarded the title of "Cruising World - Boat of the Year - Category: Domestic Boat" in 2019.
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Island Packet 349's   Main Features
Model Island Packet 349
Type of hull Monohull
Category Offshore cruising sailboat
Shipyard
Designer Robert Johnson
Award 2019 Cruising World - Boat of the Year - Category: Domestic Boat
Construction Hull:
single skin fiberglass / polyester
Deck:
sandwich Divinicell / fiberglass / polyester
First built hull 2018
Last built hull Still in production
Appendages Keel :
Semi-long keel
Helm 1 wheel
Rudder 1 rudder on skeg
Cockpit Closed aft cockpit
Unsinkable No
Trailerable No
EC certification A
Standard public price ex. VAT (indicative only) About
250 000
(2019)
Island Packet 349's   Main dimensions
Length overall 38’ 4”
Hull length 38’ 4”
Waterline length 31’ 5”
Beam (width) 12’ 6”
Draft 4’
Mast height from DWL 54’
Light displacement 19998 lbs
Ballast weight 7599 lbs
Ballast type Lead
Island Packet 349's   Rig and sails
Upwind sail area 774 sq.ft
Rigging type Sloop Marconi masthead
Rotating spars No
Mast position Keel stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire continuous
Number of levels of spreaders 1
Spreaders angle 0 °
Island Packet 349's   Performances
Upwind sail area to displacementiThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.
The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size. Upwind : under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 23 it indicates a fast sailboat.
16.53
Displacement-Length ratio (DLR)iThe Displacement Length ratio is a figure that points out the boat's weight compared to its waterline length. DLR is obtained by dividing the boat's displacement in tons by the cube of one one-hundredth of the waterline length (in feet).
The DLR can be used to compare the relative mass of different sailboats no matter what their length: a DLR less than 180 is indicative of a really light sailboat (race boat made for planning), while a DLR greater than 300 is indicative of a heavy cruising sailboat.
292
Ballast ratioiThe Ballast ratio is an indicator of the stability; it is obtained by dividing the boat's displacement by the weight of the ballast. Since the stability depends also of the hull shape and the position of the center of gravity, only boats with similar ballast arrangements and hull shape should be considered.
Higher the ballast ratio is, greater is the stability.
38 %
Hull speediAs a ship moves in the water, it creates standing waves that oppose its movement. This effect increases dramatically the resistance when the boat reaches a speed-length ratio (speed-length ratio is the ratio between the speed in knots and the square root of the waterline length in feet) of about 1.2 (corresponding to a Froude Number of 0.35) . This very sharp rise in resistance, between speed-length ratio of 1.2 to 1.5, is insurmountable for heavy sailboats and so becomes an apparent barrier. This leads to the concept of "hull speed".
The hull speed is obtained by multiplying the square root of the waterline length (in feet) by 1.34.
7.51 knots
Island Packet 349's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 45 HP
Fuel type Diesel
Fuel tank capacity 55.5 gal
Island Packet 349's   Accommodation
Cabin(s) 2
Berth(s) (min/max) 4 / 7
Head(s) 1
Fresh water tank capacity 100.4 gal
Holding tank capacity 29.9 gal
Maximum headroom 6’ 5”

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