A smaller version of our traditional rolling plotter. The 8" x 2" plotter, mounted on a marine aluminum roller assembly, contains a semi-circular protractor, distance scales of 1:20,000 and 1:40,000, as well as an inch scale.
Dimensions: 2" x 8".
 

This is a 15" course plotter with a semi-circular protractor scaled from 180° to 360° inside. Lower edge scales 1:80,000 and 1:40,000 to accommodate National Ocean Survey charts. For north and south courses, a small auxiliary protractor scale is printed inside the larger one and is used against a parallel latitude. The upper edge is scaled 1 inch equal to 20 miles to accommodate the VPOS Universal Plotting Sheets.
Dimensions: 4.375" x 15".
 

The Vecta-Rose is a pressure sensitive compass rose that can be applied directly to your charts when the printed rose is not in a convenient location. Can be oriented to either true or magnetic north for handy reference.
Dims: 4.5" x 4.5".
 

Heavy duty, crystal clear acrylic construction is the foundation for this simple to use, professional plotting aid. Arms are rigid enough to trace a bearing line. Can be used to position and chart from three identifiable shore, landmark, or buoy locations. Just measure the angles on the protractor and locate your position on the chart. Moveable arms have a vernier scale for even more precise measurements.
Dims: 6" x 21".
 

This navigation tool is versatile and can be used to lay off a course or a bearing, measure distance between any two points, plot a position on a chart from a given set of coordinates, or determine the coordinates of a position on a chart. It is an updated version of the Breton and Portland Plotters. Pencil and sharpener included.
Dims: 15" x 5".
 

Made with the professional in mind, the P.R. 500 has aconsiderably larger body than the smaller bi-rola rule. Built to take rigorous use aboard commercial and blue water vessels, the P.R. 500 provides one of the easiest methods invented for plotting courses.

Features:
• Patented four-way rolling motion
• Roller body has protractor markings every 1/2 degree
• 1-1/4" magnifying lens for enhancing chart data
• Easy to follow instructions
• Packaged in a protective, durable vinyl pouch

Used by the United States Power Squadrons for years, this plotter is a similar design to our square protractor, only it is slightly larger and incorporates a compass rose in the center to make calculating courses, bearings, and variation much easier. Comes in a convenient storage sleeve imprinted with easy to follow instructions.
Dims: 7-3/4" x 9

2802 Square Protractor (Not Shown)

This plain edge protractor is suitable for plotting courses and bearings. Notations can be made directly on the matte plastic surface with a pencil. Constructed of durable, transparent plastic. Instructions included.
Dims: 5" square.
 

The Weems & Plath Compute-A-Course™ is a compact, multi-purpose plotting tool. Ideal for general boating or commercial use. The Compute-A-Course™ can be used for position fixing, course plotting, and distance measurements with the included scales. Using the log scale on the instructions, time/distance calculations are a snap. Instructions included.
Dims: 7-3/16" w x 8-1/2" h.
 

An advanced navigation tool, the circular slide rule provides for the solution of time, speed and distance, fuel consumption, conversions, multiplication, and division. On the reverse, the face of the Vectormaster permits rapid solution of problems involving vectors, such as those encountered in current sailing, the determination of true wind direction and force, and the apparent wind to be expected on other headings. Given the position of a storm, and the direction and speed of its advance, you may quickly determine the course which will put maximum distance between your vessel and the oncoming storm. Instruction booklet included.
Dims: 7" square.
 

Gives immediate solution to all speed-time-distance problems. Equally applicable for nautical or statute miles. Speed in knots or m.p.h., time in hours, minutes, or seconds, and distance in nautical or statute miles (or yards if desired, and if speed is in knots.) Easy to read and accurate. Standard in U.S. Navy.
Dims: 7-3/8" square.
 

for Expanding Square Pattern & Sector Pattern Searches
Also known as the Search Pattern Slide Rule or Coast Guard Plotter, this tool is a “must have” for active duty Coast Guard, Auxiliarists, or anyone else who might have to run a search pattern. The Course & Leg Identifier quickly calculates the heading and run time for each leg of either an expanding square pattern or sector pattern search, giving you more time to focus on the search.
Dims: 6"x 9".
 

These are also known as VP-OS sheets. A graduated circle printed at the center allows meridians of longitude to be constructed for any latitude, thus creating a custom-made chart for any geographical position. Available as a 50-page Plotting Sheet Pad.
Dims: 12-7/8"x 14".
 

Provides the mariner with an easy method for plotting radar targets to determine their course speed and possible risk of collision. Where current exists, navigators can also use the board for determining course to steer. Complete instructions and examples from the Editors of Ocean Navigator Magazine are printed on the back. Constructed of matte finished, film laminated PVC, the board is designed to be used with a lead pencil for accuracy, then erased. Provided complete with a special suction cup/pencil point compass. Dims: 13" square.