Portland Navigation Triangle — 200 mm

📐 Precision Chartwork • Compact & Accurate • A Navigation Essential

The Portland 200 mm Navigation Triangle is a trusted chart-plotting tool designed for accurate bearings, course lines, and measurements on nautical charts. Compact, clear, and easy to handle, it’s ideal for skippers, students, and instructors who want dependable precision without cluttering the chart table.

Manufactured to professional standards by Portland, this triangle reflects the enduring value of traditional navigation—skills every competent navigator should have at hand.

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🧭 Why the Portland 200 mm Triangle Belongs in Your Chart Kit

📐 Compact 200 mm Size — Precise & Manageable

• 200 mm length offers excellent control for detailed plotting

• Perfect for small to medium chart areas and confined chart tables

• Easy to store, quick to deploy, and comfortable to use for extended sessions

This size is a favourite for accuracy-focused work and training environments.

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🔁 Clean, Accurate Bearing Transfer

• Straight, true edges support precise bearing and course plotting

• Ideal for use alongside parallel rules or a second triangle

• Helps transfer angles from the compass rose with confidence

Simple geometry, done properly, delivers reliable results.

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👁️ Clear Acrylic for Maximum Visibility

• Transparent construction keeps chart detail fully visible beneath

• High-contrast markings improve readability and reduce parallax error

• Lets you see exactly where your line meets chart features

Nothing obscures your work—clarity supports accuracy.

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🛠️ Built for Repeated Use

• Made from durable acrylic that resists flexing and warping

• Smooth, polished edges glide easily over charts

• Designed for classroom, training, and real-world navigation

It’s a tool you’ll use again and again.

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⚓ A Core Tool of Traditional Seamanship

Navigation triangles remain essential for:

• Teaching chartwork fundamentals

• Manual backup when electronics fail

• Passage planning and route checking

• Maintaining sound navigation discipline

Compact triangles like this one are especially useful for fine, controlled plotting.

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📐 Specifications

• 📏 Length: 200 mm

• 📐 Type: Navigation / plotting triangle

• 🧭 Use: Bearing transfer, course plotting, chart measurement

• 🛠️ Material: Clear acrylic

• ⚓ Application: Nautical charts, training, professional use

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🎯 Who This Is For

• ⚓ Skippers & sailors — precise manual plotting on board or ashore

• 🧭 Navigation students — ideal size for learning and exams

• 📘 Instructors & training schools — durable classroom equipment

• 🗺️ Traditional navigators — disciplined chartwork with confidence

• 🎁 Maritime gift buyers — a practical, purposeful navigation tool

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⭐ Why Choose Portland?

Portland navigation instruments are valued for clarity, accuracy, and consistency—tools made to support learning and professional chartwork alike.

The 200 mm Navigation Triangle is a perfect example: simple, precise, and dependable.

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Plot with precision—every line counts

Add the Portland 200 mm Navigation Triangle to your chart kit and enjoy clean, confident plotting wherever your navigation takes place.
Add to cart and keep your chartwork sharp and accurate.