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Blundell Harling

Discover the complete range of Blundell Harling marine navigation instruments — premium British-made chart tools designed for accurate chart work on yachts, sailboats, powerboats, and commercial vessels. Blundell Harling (based in Portland, Dorset) has been a trusted name in marine plotting equipment for decades, offering reliable, user-friendly instruments that simplify course plotting, bearing transfer, distance calculations, and tidal planning. Key highlights include:

  • Portland Course Plotter (best-selling rotary plotter with movable disc for quick magnetic variation correction, direct course/bearing readings, and grid for latitude plotting from GPS)
  • Portland Course Plotter and Divider Kit (complete set with plotter and brass dividers for comprehensive chart work)
  • Portland Navigational Plotter (advanced version with enhanced scales and features)
  • Parallel Rules (e.g., Captain Field's Pattern – traditional brass/acrylic rules for transferring bearings accurately)
  • Dividers (brass single-handed or straight dividers for measuring distances on charts)
  • Speed-Time-Distance Calculator (NATO-pattern slide rule for quick calculations of speed, time, or distance)

All Blundell Harling instruments feature clear markings, robust construction (often in acrylic/brass), comprehensive instructions (including RYA-approved guides), and compatibility with standard nautical charts. Ideal for RYA training, coastal navigation, passage planning, or professional use — shop genuine Blundell Harling chart plotters, rules, dividers, and calculators with UK & worldwide delivery from Marine Compasses UK.

Brand: Blundell Harling Model: 0655.37
A simple to use slide rule device for calculating the third variable given the other two (distance covered, given speed and elapsed time) to a NATO pattern...
£15.75
(Inclusive)
Portland Protractor 125mm (5 inch)
2 - 3 Days
Brand: Blundell Harling Model: 0656.60
A 5 inch square Douglas-type pattern navigational protractor that can also be used as a simple parallel rule and plotter...
£13.75
(Inclusive)
Brand: Blundell Harling Model: 0656.61
A 10 inch square Douglas-type pattern navigational protractor that can also be used as a simple parallel rule and plotter...
£17.75
(Inclusive)
Brand: Blundell Harling Model: 0656.63
A strong acrylic 200mm triangle with protractor markings and compass points with reciprocals in red and a scale in millimetres.Can be used in pairs as a parallel rule...
£8.75
(Inclusive)
Brand: Blundell Harling Model: 0656.65
A strong acrylic 230mm triangle with protractor markings and compass points with reciprocals in red and a scale in millimetres Navigation Instruments thumbnail text.Can be used in pairs as a parallel rule...
£12.75
(Inclusive)
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