Chart Instruments

The Astra IIIB has somewhat revolutionized celestial navigation. Never before has such a high quality, accurate metal sextant been available at such a low price. Over 20,000 sextants of this model have been sold in the US alone in the past 21 years; far more than any other serious sextant. Its popularity has spread throughout the rest of the world as well, making it the the most recognized (and supported)...

Traditional parallel rules made from perspex with plated brass links and four bevelled edges, needed at every boat owners chart table.

Traditional parallel rules made from perspex with plated brass links and four bevelled edges, needed at every boat owners chart table.

Brass Compass Chart Weight™ 661 Forged brass ring. Presentation gift box. Felt bottom protects surface and prevents sliding. Customized engraving available. Diameter: 3" (76 mm). Wt: .75 lbs. (340 g). Liquid filled compass.

Kelvin Hughes Chart Correcting Kit

The GPS Plotter is a straightforward and effective interface between a GPS and a paper chart. It enables the latitude and longitude obtained from a GPS to be quickly, easily, and accurately plotted on a paper chart in a simple two-step maneuver. It does this with its innovative straight-line action and its special pencil guide holes. The instrument features protractor markings so that it can also serve...

Designed to be mounted inside or out, this heelmeter or inclinometer will measure the boats angle of heel with a 1 degree graduation up to 45 degrees.

Feature: New innovative design for day and night use. Red LED light built into each leg for use in low light conditions. Center adjustment mechanism allows quick, precise operation. Tool functions as both a compass and divider. Battery lasts approximately 20 hours with lights on. Spare point, lead and knob provided. Complete instructions included in package. Length: 7" (178 mm). Wt: 0.19...

LIGHTrule CEVNI Identifies lights and shapes as prescribed by European code for Inland Waterways. Displays over 50 light configurations. Displays 18 maneuvering and warning signals. Actual view of vessels for port, starboard, bow and stern lights. Visual guide for horn signals. Magnifying lens for clear readability of definitions. Durable plastic construction. Size: 16" x 5-1/4" (407 x 133...

Captain Fields' Pattern - Bar Parallel Rule . Divided with protractor markings (double reading) and compass points, this rule is made from 6mm acrylic, bevelled on all four edges with solid brass links. All other metallic parts are made from non-corrosive materials. Rubber pads are fitted to the underside to prevent slipping.

New parallel rule in a compact size that is particularly suited for use on modern small chart tables. All the features of standard parallel rule but fits in pocket and is easier to use. Enables transfer of GPS positions rapidly, easily and accurately to any paper chart. Locking knob enables the two rulers to be fixed in any given separation which allows rapid determination of GPS position. Two sets...

Solid Brass Single Hand Divider 175mm 7''

A bright green directional arrow prevents accidental reciprocal bearings and the edges are graduated for tide and boat speed. The base has a fixed grid so it is easy to plot latitude from your GPS system. Comprehensive instructions are included.

Portland course plotter and dividers kit Recommended to RYA students taking training courses. A bright blue directional arrow prevents accidental reciprocal bearings and the edges are graduated for tide and boat speed. Fixed grid base helps plotting lat. and long. from GPS. Kit includes 7inch S/H dividers with brass finish.

ROADrule CEVNI Identifies navigation aids and markers as prescribed by the European Code for Inland Waterways. Displays 38 Navigation Aid Definitions. Displays 12 Rules of the Road. Magnifying lens for clear readability of definitions. Durable plastic construction. Size: 16" x 5-1/4" (407 x 133 mm). Wt: 0.4 lb. (182 g).

If you have ever been on the water at night and wondered if the marine navigation lights you see are from an approaching or fleeing vessel, or if you wonder that the vessel is a fishing trawler or super tanker, then LIGHTrule is for you. This simple-to-us