HOME
Cape Ann Storm
Technical specs...

  Maneouverable and FAST, seaworthy kayak for medium to large paddlers.








        

Storm description | MATERIALS
Medium and small size versions of this kayak: StormLT and StormSLT


Click on pictures for a large, detailed version.

Property English Units Metric Units Comments
Length Overall 17.5 ft 5,334 m length from bow to stern as designed
Beam Overall 22 in 55,88 cm widest part of kayak
Draft 4 in 10,14 cm baseline to Designed Water Line (DWL)
Volumetric Properties
Displacement 240.3 lb 109,24 kg at DWL
Volume 3.75 ft^3 106,3 liters displacement in cubic feet or liters of sea water
Wetted Surface 20.43 ft^2 1,89 m^2 underwater surface area to DWL
LCB 8.43 ft 2,56 m longitudinal center of buoyancy from x=0
LCB % LWL 53.1 % 53,1 % LCB as a percetage of waterline length from x=0
VCB 2.49 in 6,33 cm vertical center of buoyancy from baseline
Waterplane Properties
Waterplane area 17.27 ft^2 1,6 m^2 at DWL
LCF 8.24 ft 2,51 m longitudinal center of flotation from x=0
LCF % LWL 51.9 % 51,9 % LCF as a percetage of waterline length from x=0
LWL 15.86 ft 4,83 m length of waterline; same as DWL
BWL 20.5 in 50,93 cm beam of waterline
Sinkage 92.1 lb/in 16,49 kg/cm pounds displaced per one inch of sinkage
Form Coefficients (no units, same for metric)
Cb 0.425       block
Cm 0.768       midship
Cp 0.553       prismatic
Cwp 0.651       waterplane
Area/Displacement 8.457       Area / Displacement ratio [ft^2/(ft^3)^2/3]
Length / Beam 9.495       Length / Beam ratio [LWL / BWL]
Miscellaneous
Area of cockpit 2.96 ft^2 0,275 m^2 for cockpit template in plans (small)
Circumference 6.76 ft 2,06 m cockpit
Depth in front 12 5/8 in 32 cm inside cockpit
Depth in rear 10 in 25,4 cm inside cockpit
Deck area 23.9 ft^2 2,22 m^2 includes cockpit area
Hull area 31 ft^2 2,88 m^2  
Loading Medium to large paddlers, 160-230lb (73 -104kg)// Recommended max. load - 260lb
x=0 the start of waterline (DWL) at bow

All English units (ft / in) in the plans have a Metric (m / cm) eqivalent !
.

Material

  Wood strips - assumes bead & cove strips
Unit converter
Metric / Standard unit converter

Coverage + 'fudge factor' for waste Surface area (ft2) (m2) Total length of 3/4" strips (ft) (m) Number of 3/4"x 16ft strips Total length of 5/8" strips (ft) (m) Number of 5/8"x 16ft strips
Total area of kayak (+ cockpit) 55  (5,1) 1056  (322) 66 1320  (402) 82
Total area + 5% 57.75  (5,4) 1109  (338) 69 1386  (422.5) 87
Total area + 10% 60.5  (5,62) 1162  (354) 72 1452  (442) 91

Notes & Tips:
  • 3/4" strip width = 1,9 cm
  • 5/8" strip width = 1,58 cm
  • 16 feet = 4,87 m
  • The accuracy of figures in the table is within (+ -) few feet
  • For custom calculation, see the Wood strip Calculator
  • The coverage based on the "+ 10%" is most recommended
  • Estimate wood for deck inlays as a percentage of the deck surface area
  • Ideal strip length is between 10 - 16 feet
  Fiberglass coverage
 
Coverage of fiberglass
(plain weave e-glass)
yards
(yd)
feet
(ft)
meters
(m)
How to estimate
Deck - 4 oz. e-glass 12.7   11,6 two times the kayak length + 1 yard (1m)
Hull - 6 oz. e-glass 12.7   11,6 two times the kayak length + 1 yard (1m)
2" wide glass tape   79 24 four times the kayak length + 9 ft (3m)

Notes & Tips:
  • Minimum width of fabric is 38" - will no allow for full hull abrasion patch
  • Order 50" width of the 4oz. glass to get the extra hull abrasion patch material
  • If 50" fabric is not available, order one 'waterline length - LWL' of additional cloth (any weight)
  • Round figures to the nearest higher number when ordering fabric
  • The 6oz. glass can always replace the 4oz.
  • See different types of reinforcement fabrics
  • Glass tape is sold in 'feet' and cloth in yards (in the US)
  • Glass tape is used to bond the kayak shells and for additional stem reinforcement
  Epoxy
  Minimum total volume of epoxy mix (resin + hardener): 2.5 to 3 gallons

Notes & Tips:
  • Usage may vary (+-) 0.5 gallon as a result of the thickness of lay-up, fillet size, unused batches, spills, bad (unmixed) batches, care in application (overapplication), additional composite components such as coamings, hatch seals, rudders etc...
  • If epoxy is sold by weight, the density of epoxy is very close to water (1dm3 = 1 liter = 1kg)
  • 1 gallon = 3.8 liters
  • Learn about epoxy

Back to Kayak Designs | Plans | Kayak comparison page



Home Kayak Designs Kayak Shop Materials Kayak Gallery About us
Building Manual Plans Sandwich Core Wood Kayak Order E-mail
Epoxy Test Abrasion Cloth Rudder Resources Choosing Kayak Guestbook

If you notice any problems with the site (i.e. error links, missing images) please, let me know. Thanks

Mail:
Vaclav Stejskal
10 Colonial Court apt. 73
Stoneham, MA. 02180
           USA
Tel:  781-481-9261

E-mail  

© 1999 - 2013 Copyright Vaclav Stejskal
All rights reserved

Last page update: 29 October 2013