Marine Calculators
Hull Speed
Maximum Speed of a Single-Hull Displacement Boat
Hull Speed = 1.34 * (LWL)
1/2
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)
Sail Area Displacement Ratio
This ratio indicates how fast the boat is in light wind. The higher the number the faster the boat.
| 10-15 | Cruiser |
| 16-20 | Cruiser-Racer |
| 21-24 | Racer |
| > 24 | Performance Racer |
Sail Area Displacement Ratio = Sail Area / ( Displacement Volume )
2/3
Displacement Volume in Cubic Feet = Weight in Pounds / 64
New product with the latest LED technology
$109.95
|
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
|
An excellent LED Bow light. Easy to mount Made in USA!
On Sale Now. MSRP $242.00, Now $195.00!
$195.00
|
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
|
|
You'll learn to love the Little Monster™.
$9.95
|
Use the same technology that unlocks your car door to turn your deck lights on before you board from up to 75 Yards away - Makes boarding easier and safer!
$39.00
|
Charges deeper, faster and without maintenance!
Will not spill or leak!
$279.95
|
Everything you need to upgrade your Yanmar,Perkins or other saddle mount dual foot alternators to the most efficient charging system for AGM or flooded cell batteries
Charge faster Charge better!
$939.95
|
