Detailed sailboat specifications and datasheets since 2015
MetricSI (m)
Imperial & Metricboth
ImperialIMP (ft)

Etap 39s (Deep draft) vs Etap 39s (Shoal draft)

Main featuresEtap 39s Deep draftEtap 39s Shoal draft
Model
Etap 39s
Etap 39s
Version
Deep draft
Shoal draft
Hull type
Monohull
Monohull
Category
Cruising sailboat
Cruising sailboat
Sailboat builder
Etap
Etap
Sailboat designer
Country
Belgium
Belgium
Construction
GRP (glass reinforced polyester):
Sandwich foam fiberglass polyester
GRP (glass reinforced polyester):
Sandwich foam fiberglass polyester
First built hull
1998
1998
Last built hull
2005
2005
Appendages
Keel : L-shaped keel (with bulb)
Keel : L-shaped keel (with bulb)
Helm
Single helm wheel
Single helm wheel
Rudder
Single spade rudder
Single spade rudder
Unsinkable
Yes
Yes
Trailerable
No
No
EC design category
 iThe CE design category indicates the ability to cope with certain weather conditions (the sailboat is designed for these conditions)

A: Wind < force 9, Waves < 10m
B: Wind < force 8, Waves < 8m
C: Wind < force 6, Waves < 4m
D: Wind < force 4, Waves < 0,5m
A
A
 
Main dimensionsEtap 39s Deep draftEtap 39s Shoal draft
Overall length
39’11.88 m
39’11.88 m
Hull length
38’ 1”11.6 m
38’ 1”11.6 m
Waterline length
33’ 6”10.2 m
33’ 6”10.2 m
Beam (width)
12’ 7”3.85 m
12’ 7”3.85 m
Waterline beam (width)
10’ 7”3.22 m
10’ 7”3.22 m
Draft
6’ 5”1.95 m
4’ 11”1.5 m
Mast height from DWL
57’ 1”17.4 m
57’ 1”17.4 m
Light displacement (MLC)
14991 lb6800 kg
14991 lb6800 kg
Ballast weight
4519 lb2050 kg
4519 lb2050 kg
Ballast type
Lead
Lead
 
Rig and sailsEtap 39s Deep draftEtap 39s Shoal draft
Upwind sail area
835 ft²77.6 m²
835 ft²77.6 m²
Downwind sail area
1221 ft²113.4 m²
1221 ft²113.4 m²
Mainsail area
443 ft²41.2 m²
443 ft²41.2 m²
Genoa area
392 ft²36.4 m²
392 ft²36.4 m²
Jib area
161 ft²15 m²
161 ft²15 m²
Stormjib area
70 ft²6.5 m²
70 ft²6.5 m²
Asymmetric spinnaker area
777 ft²72.2 m²
777 ft²72.2 m²
I
 iFore triangle height (from mast foot to fore stay top attachment)
43’ 4”13.2 m
43’ 4”13.2 m
J
 iFore triangle base (from mast foot to bottom of forestay)
12’ 1”3.7 m
12’ 1”3.7 m
P
 iMainsail hoist measurement (from tack to head)
46’ 7”14.2 m
46’ 7”14.2 m
E
 iMainsail foot measurement (from tack to clew)
16’ 7”5.05 m
16’ 7”5.05 m
Rigging type
Sloop Marconi 7/8
Sloop Marconi 7/8
Mast configuration
Deck stepped mast
Deck stepped mast
Rotating spars
No
No
Number of levels of spreaders
2
2
Spreaders angle
18 °
18 °
Spars construction
Aluminum spars
Aluminum spars
Standing rigging
1x19 strand wire
1x19 strand wire
 
PerformancesEtap 39s Deep draftEtap 39s Shoal draft
Upwind sail area to displacement
 iThe 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 25 it indicates a fast sailboat.
233 ft²/T21.62 m²/T
233 ft²/T21.62 m²/T
Downwind sail area to displacement
 iThe 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.
340 ft²/T31.59 m²/T
340 ft²/T31.59 m²/T
Displacement-length ratio (DLR)
 iThe Displacement Length Ratio (DLR) is a figure that points out the boat's weight compared to its waterline length. The 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
181
Ballast ratio
 iThe Ballast ratio is an indicator of stability; it is obtained by dividing the boat's displacement by the mass of the ballast. Since the stability depends also of the hull shapes and the position of the center of gravity, only the boats with similar ballast arrangements and hull shapes should be compared.

The higher the ballast ratio is, the greater is the stability.
30 %
30 %
Critical hull speed
 iAs 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
7.75 knots
 
Auxiliary engineEtap 39s Deep draftEtap 39s Shoal draft
Engine(s)
1 inboard engine
1 inboard engine
Engine(s) power (min./max.)
40 HP / 50 HP
40 HP / 50 HP
Fuel type
Diesel
Diesel
Fuel tank capacity
37 gal140 liters
37 gal140 liters
 
Accommodations and layoutEtap 39s Deep draftEtap 39s Shoal draft
Cockpit
Closed aft cockpit
Closed aft cockpit
Cabin(s) (min./max.)
2 / 3
2 / 3
Berth(s) (min./max.)
6 / 8
6 / 8
Head(s)
1
1
Freshwater tank capacity
92.5 gal350 liters
92.5 gal350 liters
 
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