Cape Ann Storm Kayak- particulars

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

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

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Mail:
Vaclav Stejskal
58 Wood Ln.
Acton, MA 01720
USA
Tel: 781-481-9261

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