Detailed sailboat specifications and datasheets since 2015
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Delphia 47 Keel and centerboard

Sailboat specifications

The Delphia 47 is a 46’7” (14.2m) cruising sailboat designed by Andrzej Skrzat (Poland). She was built between 2008 and 2019 by Delphia Yachts (Poland). The Keel and centerboard version features a centerboard inside of a short fin-keel allowing shoal draft while maintaining upwind capabilities.

The Delphia 47 is as well listed, on Boat-Specs.com, in Deep draft and Shoal draft version (see all the versions compared).

Delphia 47's main features

Model
Delphia 47
Version
Keel and centerboard
Hull type
Monohull
Category
Cruising sailboat
Sailboat builder
Sailboat designer
Country
Poland
Construction
GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester (vacuum infusion)
- Deck: Sandwich PVC fiberglass polyester (vacuum infusion)
First built hull
2008
Last built hull
2019
Appendages
Centerboard : pivoting centerboard in the keel
Helm
Twin helm wheels
Rudder
Single spade rudder
Unsinkable
No
Trailerable
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
Standard public price ex. VAT (indicative only)
About 
214 000 €
 (2017)

Delphia 47's main dimensions

Overall length
47’ 6”14.48 m
Hull length
46’ 7”14.2 m
Waterline length
42’ 2”12.86 m
Beam (width)
14’ 8”4.48 m
Draft
6’ 7”2 m
Draft when appendages up
4’ 1”1.25 m
Mast height from DWL
67’ 1”20.45 m
Light displacement (MLC)
31526 lb14300 kg
Ballast weight
11684 lb5300 kg
Ballast type
Cast iron exterior ballast with steel centerboard

Delphia 47's rig and sails

Upwind sail area
1207 ft²112.1 m²
Mainsail area
593 ft²55.1 m²
Genoa area
614 ft²57 m²
Rigging type
Sloop Marconi 9/10
Mast configuration
Deck stepped mast
Rotating spars
No
Number of levels of spreaders
3
Spreaders angle
Swept-back
Spars construction
Aluminum spars

Delphia 47's performances

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.
205 ft²/T19.03 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.
190
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.
37 %
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.
8.70 knots

Delphia 47's auxiliary engine

Engine(s)
1 inboard engine
Engine(s) power
75 HP
Fuel type
Diesel
Fuel tank capacity
66 gal250 liters

Delphia 47's accommodations and layout

Cockpit
Closed aft cockpit
Cabin(s) (min./max.)
3 / 5
Berth(s) (min./max.)
6 / 12
Head(s) (min./max.)
2 / 4
Freshwater tank capacity
129.4 gal490 liters
Holding tank capacity
37.2 gal141 liters
Have you spotted incorrect data?  You can report it in the forum or contact the webmaster

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