Time, Speed & Distance Calculator

⏱️ Fast Navigation Maths • Pocket-Sized • Essential for Passage Planning

The Time, Speed & Distance Calculator is a simple, effective navigation aid designed to take the guesswork out of basic voyage calculations. Whether you’re planning a coastal passage, checking ETA, or teaching navigation fundamentals, this tool lets you quickly and accurately calculate time run, speed made good, or distance travelled—without relying on electronics.

Compact, durable, and easy to use, it’s a quiet workhorse on the chart table and a staple in navigation training kits.

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🧭 Why This Calculator Belongs in Every Chart Kit

🔁 Instantly Solve the Big Three

Designed around the core navigation relationship:

Speed × Time = Distance

Use it to quickly calculate:

• Time — How long will this leg take at a given speed?

• Speed — What speed is required to arrive on time?

• Distance — How far will you travel over a set period?

No batteries, no menus—just fast, reliable answers.

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📐 Clear, Intuitive Design

• Logarithmic scale layout makes calculations quick and visual

• Easy to read, even in low light or busy chartroom conditions

• Ideal for quick checks during passage planning or instruction

Once you’ve used one, it becomes second nature.

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🛠️ Durable & Chart-Friendly

• Made from robust plastic or card (model dependent) for repeated use

• Flat, lightweight format slips easily into chart folios or nav bags

• Won’t scratch charts or snag plotting tools

Built for real-world navigation, not just classrooms.

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⚓ Perfect Backup to Electronics

Even with GPS and chartplotters onboard, manual calculation tools remain essential for:

• Cross-checking electronic data

• Training and examinations

• Planning when power or signal is unavailable

• Reinforcing sound seamanship fundamentals

This calculator keeps core skills sharp.

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📐 Typical Specifications

• 🧭 Function: Time / Speed / Distance calculation

• 📏 Format: Flat slide or circular calculator (model dependent)

• 🛠️ Material: Durable plastic or laminated card

• ⚓ Use: Nautical navigation, training, passage planning

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🎯 Who This Is For

• ⚓ Skippers & sailors — quick ETA and speed checks

• 🧭 Navigation students — exam-approved calculation aid

• 📘 Instructors & training schools — simple, visual teaching tool

• 🚢 Commercial & professional mariners — fast mental maths backup

• 🎁 Maritime gift buyers — a practical, inexpensive essential

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⭐ Why Use a Time, Speed & Distance Calculator?

Because navigation is about understanding, not just automation. This calculator helps you stay engaged with your passage planning, spot errors early, and maintain confidence in your numbers—especially when conditions change.

It’s small, simple, and surprisingly powerful.

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Keep your navigation maths effortless

Add a Time, Speed & Distance Calculator to your chart kit and enjoy quick, confident calculations whenever you need them.
Add to cart and keep your passage planning sharp.