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Sailboat specifications and datasheets

Etap 39s deep draft

The Etap 39s, here in "deep draft" version, is a 38’1” monohull sailboat designed by J&J Design. She was built by Etap (Belgium) and made of sandwich foam / fiberglass / polyester. This sailboat was produced between 1998 and 2005.
Etap 39s Etap 39s sailplanEtap 39s sailplanEtap 39s layoutEtap 39s layoutEtap 39s accommodations
Etap 39s's   Main Features
Model Etap 39s
Version Deep draft
Type of hull Monohull
Category Cruising monohull
Cockpit Closed aft cockpit
Shipyard
Designer J&J Design
Construction Hull and deck:
sandwich foam / fiberglass / polyester
First built hull 1998
Last built hull 2005
Appendages Keel :
Fin with bulb
Helm 1 wheel
Rudder 1 spade rudder
Unsinkable Yes
Trailerable No
EC certification A
Standard public price ex. VAT (indicative only) N/A
Etap 39s's   Main dimensions
Length overall 39’
Hull length 38’ 1”
Waterline length 33’ 6”
Beam (width) 12’ 7”
Waterline beam (width) 10’ 7”
Draft 6’ 5”
Mast height from DWL 57’ 1”
Light displacement 14991 lbs
Ballast weight 4519 lbs
Ballast type Lead
Etap 39s's   Rig and sails
Upwind sail area 835 sq.ft
Downwind sail area 1221 sq.ft
Mainsail area 443 sq.ft
Genoa area 392 sq.ft
Jib area 161 sq.ft
Stormjib area 70 sq.ft
Asymetric spinnaker area 777 sq.ft
Rigging type Sloop Marconi 7/8
Mast position Deck stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire
Number of levels of spreaders 2
Spreaders angle 18 °
IiFore triangle height (from mast foot to fore stay attachment) 43’ 4”
JiFore triangle base (from mast foot to bottom of forestay) 12’ 1”
PiMainsail hoist measurement (from tack to head) 46’ 7”
EiMainsail foot measurement (from tack to clew) 16’ 7”
Etap 39s'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.
21.62
Downwind 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.
31.59
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.
181
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.
30 %
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.
7.75 knots
Etap 39s's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine (min/max) 40 HP / 50 HP
Fuel type Diesel
Fuel tank capacity 37 gal
Etap 39s's   Accommodation
Cabin(s) (min/max) 2 / 3
Berth(s) (min/max) 6 / 8
Head(s) 1
Fresh water tank capacity 92.5 gal

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