LED lighting, soundproof, Sailor's Solutions Inc.      
Marine Calculators
Hull Speed
Maximum Speed of a Single-Hull Displacement Boat

Hull Speed = 1.34 * (LWL)1/2
  
What's your boat's length of waterline in feet?  
 

Boat Speed
If your speed log is disabled, you can calculate the boat's speed by determining the time it takes for a wood chip or other floating object to pass from the bow to the stern. If you want to retrieve the object, attach a string to it.

Boat Speed = (60 (sec/min) * 60 (min/hr) * length of boat in feet) /
( 6076.1 (feet/nautical mile)* seconds for chip to pass)
How long is your boat in feet?
How long does it take for a light object to reach the end of the boat in seconds?
 

Sail Area Displacement Ratio
This ratio indicates how fast the boat is in light wind. The higher the number the faster the boat.
10-15Cruiser
16-20Cruiser-Racer
21-24Racer
> 24Performance Racer

Sail Area Displacement Ratio = Sail Area / ( Displacement Volume )2/3
Displacement Volume in Cubic Feet = Weight in Pounds / 64
What is the area of your sail in square feet?
How heavy is your boat in pounds?
 

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Velcro® Brand Marine Grade Hook and Loop,
2-inch-wide, waterproof adhesive-back. Sold by the foot in white or black

Solve onboard mounting problems fast! A little goes a long way!
$4.99
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60-100-SR-IG alternator, ARS-5-H regulator, MC-TS-A Alternator Temp Sensor, MC-TS-B Battery Temp Sensor
Everything you need to upgrade your Yanmar,Perkins or other saddle mount dual foot alternators to the most efficient charging system for AGM or flooded cell batteries

Charge faster Charge better!
$939.95
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BatteryMINDer® OnBoard Desulphators With Battery and Charging System Indicator 12-V & 24-V
Keep your batteries plates clean & fresh. Works automatically each time you charge!
$71.00
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Laser Rescue Flare
Hand-held day and nighttime laser signaling device.
$99.95
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Winch Handle Holder

$24.95
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Automatic Loading Multi-bit Screw Driver will make you the feel like Matt Dillon! Works like a pump gun!
Loads and chambers a bit from its magazine/ handle. You never touch the bit!
$19.95
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Razor sharp HOOKNIFE clears lines fast!
Hook and pull action slices entangled lines from your prop or rudder!
$64.95
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Signal Mate2NM BiColor Bow Light with adjustable mounting bracket
An excellent LED Bow light. Easy to mount Made in USA!
On Sale Now. MSRP $242.00, Now $195.00!
$195.00

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