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?
 

product<br>image
SmartLock outboard motor lock for engines to 35/40 HP (with clamp screws). (Temporarily out of stock. New inventory expected in July)

Keep your engine safe from thieves!
$79.95
product<br>image
Signal Mate 3 NM LED Anchor Light with Photocell that Turns light on at Dusk and off at Dawn
Compact and rugged Designed for many years of operation Made in USA!
On Sale Now. MSRP $246.00, Now $199.95!
$199.95
product<br>image
Little Monster™ Neodymium Retrieval Magnet
You'll learn to love the Little Monster™.
$9.95
product<br>image
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
product<br>image
Ultra Tef-Gel - Anti-Seize Lubricant for fastening stainless screws to aluminum
Non-lanolin 100% synthetic formula US Navy spec.
$15.49
product<br>image
LED Spreader light from Scandvik
New product with the latest LED technology
$109.95
product<br>image
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
product<br>image
WinchRite ABT Cordless, Lightweight, Electric Winch Handle
Boat Show Special through February! Instantly electrify all your winches!
$749.00

Go to top of page.