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Cape Ann Single
Technical specs...

  Fast recreational / touring kayak with excellent stability designed for larger built or top heavy kayakers of all skill levels.







        

Cape Ann description | MATERIALS
Larger displacement version of this kayak: Cape Ann HV


See Gallery2 for more photos
Click on pictures for a large, detailed version.


Property English Units Metric Units Comments
Length Overall 18 ft 5,48 m length from bow to stern as designed
Beam Overall 23 in 58,42 cm widest part of kayak
Draft 4 in 10,15 cm baseline to Designed Water Line (DWL)
Volumetric Properties
Displacement 270 lb 122,7 kg at DWL
Volume 4.2 ft^3 119,1 liters displacement in cubic feet or liters of sea water
Wetted Surface 22.1 ft^2 2,05 m^2 underwater surface area to DWL
LCB 8.65 ft 2,63 m longitudinal center of buoyancy from x=0
LCB % LWL   % 52,8 % LCB as a percetage of waterline length from x=0
VCB 2.4 in 6,19 cm vertical center of buoyancy from baseline
Waterplane Properties
Waterplane area 18.45 ft^2 1,714 m^2 at DWL
LCF 8.49 ft 2,58 m longitudinal center of flotation from x=0
LCF % LWL   % 51,8 % LCF as a percetage of waterline length from x=0
LWL 16.37 ft 4,99 m length of waterline; same as DWL
BWL 21.6 in 54,8 cm beam of waterline
Sinkage 98.4 lb/in 17,6 kg/cm pounds displaced per one inch of sinkage
Form Coefficients (no units, same for metric)
Cb 0.428       block
Cm 0.821       midship
Cp 0.521       prismatic
Cwp 0.625       waterplane
Area/Displacement 8.48       Area / Displacement ratio [ft^2/(ft^3)^2/3]
Length / Beam 9.09       Length / Beam ratio [LWL / BWL]
Miscellaneous
Area of cockpit 3.15 ft^2 0.292 m^2 for cockpit template in plans (small)
Circumference 6.96 ft 2,12 m cockpit
Depth in front 13.0 in 33 cm inside cockpit
Depth in rear 10.5 in 26,6 cm inside cockpit
Deck area 26.0 ft^2 2,41 m^2 includes cockpit area
Hull area 32.0 ft^2 2,98 m^2  
Kayaker fit & Loading Large paddlers
180 lb min. -> 220 lb ideal -> 270lb max. (81 -> 100 -> 123kg)
Recommended max. load: 320lb (146 kg)
Paddler height: 6'4" feet and under (193cm)
x=0 the start of waterline (DWL) at bow
.

Material

  Wood strips
assumes bead & cove strips and you need either the 5/8" OR 3/4" strips. Not both.
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) 58.11  (5,39) 1116  (340) 70 1395 (425) 87
Total area + 5% 61.01  (5,66) 1172  (357) 73 1464  (446) 92
Total area + 10% 63.92  (5,93) 1227  (374) 77 1534  (467) 96

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
assumes complete coverage of inside and outside of hull and deck to make full sandwich core
 
Coverage of fiberglass
(plain weave e-glass)
yards
(yd)
feet
(ft)
meters
(m)
How to estimate
Deck - 4 oz. e-glass 13   11,9 two times the kayak length + 1 yard (1m)
Hull - 6 oz. e-glass 13   11,9 two times the kayak length + 1 yard (1m)
2" wide glass tape   81 24,7 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

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Last page update: 29 October 2013