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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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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SCAD LVA Low Voltage Monitor with Alert & Relay
It's programmable! Don't let your batteries go low without warning Shuts off or turns on electrical devices automatically
$79.95
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Little Monster™ Neodymium Retrieval Magnet
You'll learn to love the Little Monster™.
$9.95
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SCAD Solo Tank Tank Monitor with Gauge Panel and External Tank Sensor
Sensor installs easily on the outside of your tank. Awarded Practical Sailor Editor's Choice 2009
$154.95
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Ultra Tef-Gel - Anti-Seize Lubricant for fastening stainless screws to aluminum
Non-lanolin 100% synthetic formula US Navy spec.
$15.49
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WinchRite ABT Cordless, Lightweight, Electric Winch Handle
Boat Show Special through February! Instantly electrify all your winches!
$749.00
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LED Spreader light from Scandvik
New product with the latest LED technology
$109.95

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