Marine Plotters
Our navigation plotters come in a variety of styles and price ranges but all are sturdy with easy to read numbers and scales.
18" Bi-Rola Rule Built to take rigorous use aboard commercial and blue water vessels. Provides one of the easiest methods invented for plotting courses. Patented four-way rolling motion. Roller body has protractor markings every 1/2 in. 1-1/4 in magnifying lens for enhancing chart data.Easy to follow instructions. Packaged in protective, durable vinyl pouch. Dims: 19 5/8 in x 3 5/8 in x 1-1/4 in (499 x 92 x 32 mm). Weight 1.625 lbs. (737 g).
$175.99 $133.99
3-Arm Protractor Heavy duty, crystal clear acrylic construction. Arms are rigid enough to trace bearing line. Can be used to position and chart from three identifiable shore, landmark or buoy locations. Measure angles on the protractor and locate your position on chart. Moveable arms have vernier scale for even more precise measurements. Dims: 6 in x 21 in (152 x 533 mm). Weight 0.31 lbs. (141 g).
$36.99 $29.99
Basic Navigation Set Includes: one #255 Weems Protractor, one #145-15 in Parallel ruler, one pair of #262 6 in Matte Nickel Dividers with fixed points, one #2 pencil, one pencil sharpener and instructions. Reusable plastic pouch. Dims: 16 in x 6 in (406 x 152 mm). Weight 1.06 lbs. (481 g).
$50.99 $41.99
Bi-Rola Rule Patented vertical and horizontal rolling motion simplifies course and plotting calculations. Unique radial arm allows you to automatically include compass corrections in course plotting. Patented four-way rolling motion. Roller body has protractor markings and nautical mile scale. Radial arm has Loran interpolator scales and 200 mm rule. Automatic compass corrections. When radial arm and body are used jointly, bi-role rule becomes 17 in (440 mm) divider (approximately). Speed/time/distance table included. Easy to follow directions. Protective, durable vinyl pouch. Dims: 13 7/8 in x 2 5/8 in x 1 in (352 x 67 x 25 mm). Weight .75 lbs. (340 g).
$89.99 $72.99
Course and Leg Identifier for Search and Rescue For expanding square pattern & sector pattern searches. Also known as Search Pattern Slide Rule or Coast Guard Plotter, this tool is a 'must have' for active duty coast Guard, Auziliarists, or anyone else who might have to run a search pattern. Quickly calculates heading and run time for each leg of either an expanding square pattern or sector pattern search, giving you more time to focus on search. Dims: 6 in x 9 in (152 x 229 mm). Weight 0.19 lbs. (86 g).
$30.99 $24.99
Nautical Slide Rule 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 in (187 mm) square. Weight 0.10 lbs. (46 g).
$24.99 $19.99
Navpak Plotting Tool Kit Includes: two #103-45 degree protractor triangles, one #140-12 in parallel ruler, one #133 course plotter, one pair of #260-6 in matte nickel dividers with replaceable points, one #2 pencil and instructions. Reusable plastic pouch. Dims: 7-14 in x 16-5/8 in (184 x 422 mm). Weight .81 lbs. (368 g).
$85.99 $69.99
Primary Navigation Set Includes: one #176 Ultralight Divider/Compass, one #139-12 in Parallel Ruler, one #105 Nautical Slide rule, one #1141 Navigator's Pencil and instructions. Reusable plastic pouch. Dims: 8 in x 13-3/4 in (203 x 337 mm). Weight 0.85 lbs. (386 g).
$61.99 $49.99
VEC Vectormaster Circular slide rule provides for solution of time, speed and distance, fuel consumption, conversions, multiplication and division. Face of Vectormaster permits rapid solution of problems involving vectors, such as those encountered in current sailing, determination of true wind direction and force and apparent wind to be expected on other headings. Given position of a storm and direction and speed of its advance, you may quickly determine course which will put maximum distance between your vessel and oncoming storm. Instruction booklet included. Dims: 7 in (178 mm). Weight 0.25 lbs. (114 g).
$40.99 $32.99
Weems Parallel Plotter Our most popular plotter! Plotter mounted on roller. Contains distance scales at 1:20,000, 1:40,000 and 1:80,000 to fit N.O.S. Coast and Harbor Charts, as well as inch scale. Includes semi-circular protractor for measuring courses and bearings against meridian on chart, and two quarter ircle protractors for measuring courses and bearings against parallel of latitude. Courses and parallel lines are transferred and kept parallel by means of two rollers mounted on a slide axis. Used for measuring or laying off courses and distances on nautical chart. Instructions included Dims: 3-1/2 in x 12-1/2 in (89 x 318 mm). Weight 0.31 lb. (141 g).
$24.99 $20.99
Weems Protractor Can be used to lay off course or bearing, measure distance between any two points, plot position on chart from given set of coordinates, or determine coordinates of position on chart. An updated version of Breton and Portland Plotters. Pencil and sharpener included. Dims: 15 in x 5 in (381 x 127 mm). Weight .40 lbs. (181 g).
$23.99 $19.99
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