| Main features | JPK 38 Fast Cruiser Fin keel | JPK 38 Fast Cruiser Swing keel |
Model | JPK 38 Fast Cruiser | JPK 38 Fast Cruiser |
Version | Fin keel | Swing keel |
Hull type | Monohull | Monohull |
Category | Offshore fast cruising sailboat | Offshore fast cruising sailboat |
Sailboat builder | JPK | JPK |
Sailboat designer | ||
Country | France | France |
Construction | GRP (glass reinforced polyester): Sandwich PVC fiberglass vinylester (vacuum infusion) | GRP (glass reinforced polyester): Sandwich PVC fiberglass vinylester (vacuum infusion) |
First built hull | 2012 | 2012 |
Last built hull | Still in production | Still in production |
Appendages | Keel : T-shaped keel (with bulb) | Lifting keel : swing keel |
Helm | Twin tillers | Twin tillers |
Rudder | Twin spade rudders | Twin spade rudders |
Unsinkable | No | No |
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 |
Standard public price ex. VAT (indicative only) | 212163 2020 | 233565 2020 |
| Main dimensions | JPK 38 Fast Cruiser Fin keel | JPK 38 Fast Cruiser Swing keel |
Hull length | 37’ 4”11.38 m | 37’ 4”11.38 m |
Waterline length | 34’ 1”10.4 m | 34’ 1”10.4 m |
Beam (width) | 13’ 1”3.99 m | 13’ 1”3.99 m |
Draft | 7’ 1”2.15 m | 8’ 11”2.7 m |
Draft when appendages up | 4’ 4”1.3 m | |
Light displacement (MLC) | 11905 lb5400 kg | 11905 lb5400 kg |
Ballast weight | 4189 lb1900 kg | 4189 lb1900 kg |
Ballast type | Cast iron fin with lead bulb | Glass fiber/vinylester (infusion) fin with lead bulb |
| Rig and sails | JPK 38 Fast Cruiser Fin keel | JPK 38 Fast Cruiser Swing keel |
Upwind sail area | 797 ft²74 m² | 797 ft²74 m² |
Downwind sail area | 1830 ft²170 m² | 1830 ft²170 m² |
Mainsail area | 431 ft²40 m² | 431 ft²40 m² |
Genoa area | 366 ft²34 m² | 366 ft²34 m² |
Jib area | 269 ft²25 m² | 269 ft²25 m² |
Asymmetric spinnaker area | 1399 ft²130 m² | 1399 ft²130 m² |
I iFore triangle height (from mast foot to fore stay top attachment) | 49’ 8”15.15 m | 49’ 8”15.15 m |
J iFore triangle base (from mast foot to bottom of forestay) | 15’ 11”4.85 m | 15’ 11”4.85 m |
P iMainsail hoist measurement (from tack to head) | 47’ 8”14.55 m | 47’ 8”14.55 m |
E iMainsail foot measurement (from tack to clew) | 16’ 2”4.95 m | 16’ 2”4.95 m |
Rigging type | Sloop Marconi 9/10 | Sloop Marconi 9/10 |
Mast configuration | Deck stepped mast | Deck stepped mast |
Rotating spars | No | No |
Number of levels of spreaders | 2 | 2 |
Spreaders angle | Swept-back | Swept-back |
Spars construction | Aluminum spars (carbon fiber spars as an option) | Aluminum spars (carbon fiber spars as an option) |
Standing rigging | 1x19 strand wire | 1x19 strand wire |
| Performances | JPK 38 Fast Cruiser Fin keel | JPK 38 Fast Cruiser Swing keel |
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. | 259 ft²/T24.04 m²/T | 259 ft²/T24.04 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. | 594 ft²/T55.23 m²/T | 594 ft²/T55.23 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. | 136 | 136 |
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. | 35 % | 35 % |
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. | 7.83 knots | 7.83 knots |
| Auxiliary engine | JPK 38 Fast Cruiser Fin keel | JPK 38 Fast Cruiser Swing keel |
Engine(s) | 1 inboard engine | 1 inboard engine |
Engine(s) power (min./max.) | 30 HP / 40 HP | 30 HP / 40 HP |
Fuel type | Diesel | Diesel |
Fuel tank capacity | 19.8 gal75 liters | 19.8 gal75 liters |
| Accommodations and layout | JPK 38 Fast Cruiser Fin keel | JPK 38 Fast Cruiser Swing keel |
Cockpit | Open aft cockpit | Open aft cockpit |
Cabin(s) (min./max.) | 2 / 3 | 2 / 3 |
Berth(s) (min./max.) | 4 / 7 | 4 / 7 |
Head(s) | 1 | 1 |
Freshwater tank capacity | 52.8 gal200 liters | 52.8 gal200 liters |
Maximum headroom | 6’ 4”1.92 m | 6’ 4”1.92 m |
| Fore cabin | JPK 38 Fast Cruiser Fin keel | JPK 38 Fast Cruiser Swing keel |
Berth length | 6’ 7”2 m | 6’ 7”2 m |
Berth width | 5’ 2”1.6 m | 5’ 2”1.6 m |
| Aft cabin | JPK 38 Fast Cruiser Fin keel | JPK 38 Fast Cruiser Swing keel |
Berth length | 6’ 5”1.95 m | 6’ 5”1.95 m |
Berth width | 4’ 11”1.5 m | 4’ 11”1.5 m |