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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No-OX-ID A Special Electrical Grade Conductive Grease and Contact Lubricant
Use on all electrical contacts to prevent corrosion. Rated number one by "Practical Sailor" Dec. 2010
$12.95
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Signal Mate 2NM LED Tri-Color plus Anchor, Wind Indicator Illumination and Daylight Sensor (bracket included)
Compact and rugged Designed for many years of operation. Daylight sensor turns Anchor light on/off Made in USA!
On Sale through February. MSRP $371.00, Now $310.00!
$310.00
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Perfect Pole Telescopic Handle for Hooknife Rated #1 by Powerboat Reports!
This is the best pole/handle for our line slicing Hooknife. Extends your Hooknife's reach by 6'
$29.95
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WiFi SignalMaker™ Onboard WIFi hi-gain amplifier and base station
Make your WiFi fast and reliable with our 9 dB hi-gain base station
$399.95
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Laser Rescue Flare
Hand-held day and nighttime laser signaling device.
$99.95
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Signal Mate 2NM LED Tri-Color & 2NM Anchor with Wind Indicator Illumination Includes mounting bracket
Compact and rugged Designed for many years of operation Made in USA
On Sale through February. MSRP $351.00, Now $285.00!
$285.00
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SCAD Sensibulb™ LED Light - LED cabin light bulb replacement Made in USA!
Jan '09 Practical Sailor's Highest Lumen Output!The Brightest output LED system, pleasing color, broad focus, very low battery draw. Fits into vertical and horizontal fixtures! Zero radio interference!
$24.95
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LED Spreader light from Scandvik
New product with the latest LED technology
$109.95

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