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
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
product<br>image
SmartLock outboard motor lock for engines to 35/40 HP

Keep your engine safe from thieves!
$94.95
product<br>image
Laser Rescue Flare
Hand-held day and nighttime laser signaling device.
$99.95
product<br>image
3M™ Scotchlite™ SOLAS Reflective Tape 2 inch wide- SOLD BY THE FOOT
See and be seen! Sold by the foot
$1.79
product<br>image
Lifeline AGM Deep Cycle Marine Battery
12 Volt (Size)24 (Capacity)80 Amp Hr

Charges deeper, faster and without maintenance!
Will not spill or leak!
$279.95
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
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
product<br>image
SCAD TM1 Tank Monitor with Sensor.
Monitor holding tanks and water tanks with the touch of a button.
$156.00

Go to top of page.