Sailor's Solutions LLC      
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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Small Soundproofing Kit - 12 tiles typical 28' boat engine compartment (1 inch X 1 foot X 1 foot tiles)
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SCAD Sensibulb™ LED Light - LED cabin light bulb replacement Made in USA!
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Lifeline AGM Deep Cycle Marine Battery
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SCAD TM2 Tank Monitor for Two Tanks (sensors sold separately)
Monitor two tanks with the touch of a button.
$139.00
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Razor sharp HOOKNIFE clears lines fast!
Hook and pull action slices entangled lines from your prop or rudder! NOT CURRENTLY STOCKED. Please see our new longer Hooknife in stock here: Hooknife 2
$84.95
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LED Spreader light from Scandvik
New product with the latest LED technology
$109.95
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Coolnet Sailboat Hammock - Unique 3-point design sets up fast and stores easily
If you want a really nice place to lounge or sit you need this hammock! that you can rig in a few minutes
$169.99
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SCAD PT90™ Propane Solenoid ShutOff Timer
Provides additional safety measure in case the user forgets to shut off the propane solenoid manually.
$99.00

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