"Alestra"

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Design 1023

Center Cockpit Ketch
Design Category: "Offshore"

Principal Dimensions Imp. Metric
Length on Deck: ft/m
46.9 14.26
Designed Waterline Length:ft/m
34.5 10.49
Beam: ft/m
13.3 4.04
Draft, Board Up: ft/m 5.0 1.52
Displacement: lbs/kg
33800 15364
Ballast: lbs/kg 9000 4091
Trim Ballast: As Needed 227
Sail Area: ft^2/m^2. 50% mizzen 946 87.9
     
Design cost: $1,875 for one set of building plans, specifications and the rights to build one boat.

Study plans are available. Set of 3 in same scale as drawn cost $50.

Plan Order Form 1023
The design may not be modified or reproduced without our written permission.


Type: Full Keel Auxiliary

  • Year Designed: 1971
  • Hull Type: Round Bottom
  • Centerline: Solid Fiberglass
  • Floors: Fiberglass
  • Longitudinals: Fiberglass over Formers
  • Skin: Airex Cored Fiberglass
  • Ballast: Internal, Cast Lead
  • Spars: Aluminum

Building Data
  • Construction Material: Fiberglass Hull, Wood Deck & House
  • Number of Plans: 16
  • Specifications: Yes
  • Block List: Yes
  • Lofting Required: Yes
  • Skill Level: Experienced
  • Level of Details: Above Average
  • Alternative Construction Methods: None


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Niels Helleberg Yacht Design
23 Glendale Street
Salem, MA. 01970, USA
617 227 7997 | Fax 617 202 9985