
SeaWise: Maritime Field Guide
Learn the rules. Read the sea.
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About
There is a language to life at sea. SeaWise helps you learn to read it.
A pattern of lights on the horizon. A buoy at the harbour entrance. A sound signal in poor visibility. SeaWise brings these everyday maritime encounters into a beautifully illustrated pocket field guide, with explanations, interactive diagrams and practice that help the knowledge stay with you.
For boaters, sailors, maritime students, working seafarers refreshing the foundations, and anyone drawn to a life afloat.
ONE PURCHASE, WITH EVERY INCLUDED REGION
International collision regulations, both IALA buoyage regions and all 28 regional profiles are included, together with every guide, flashcard and practice tool. There are no extra region packs to buy and no subscription.
UNDERSTAND WHAT YOU SEE
Explore vessel lights and day shapes, turn through viewing angles, and see why a light is visible from one bearing but hidden from another. Compare IALA A and B buoyage, study cardinal marks and light rhythms, and browse the full 26-flag signal alphabet. Listen to timed examples of manoeuvring and fog signals, including selected US Inland differences.
BUILD YOUR KNOWLEDGE OF THE RULES
Read approachable guides to the international collision regulations: keeping a lookout, assessing collision risk, safe speed, overtaking, crossing, restricted visibility and traffic separation schemes. Worked situations, interesting details and source links put each rule in context, so you can return to the reason behind an answer.
KEEP A FIELD GUIDE IN YOUR POCKET
112 guides cover navigation foundations, signals, preparation and selected regional requirements. Save useful pages, make your own notes, and pick up where you left off. An illustrated shipping gallery introduces container ships, LNG carriers and bulk freighters, while the regional atlas helps you find the guidance available for your waters.
MAKE RECALL PART OF YOUR ROUTINE
Swipe and tap through 422 flashcards. Combine the sections you want to practise, revisit cards when they are due, or work through a short session of questions. The 456-question bank includes written explanations and visual identification exercises. Similar-question practice gives you another way to approach the same idea.
LOOK BEYOND THE SMALL BOAT
Discover the foundations of working at sea: shipboard departments, watch handovers, fatigue, mooring, enclosed-space awareness, maintenance, safety management, galley hygiene, waste and emergency responsibilities. These introductions help aspiring seafarers understand how the work fits together aboard a merchant ship.
INTERNATIONAL FOUNDATIONS, LOCAL CONTEXT
Explore 28 regional profiles with selected local lessons, official references and clear coverage notes. See which topics are taught for a region and where you need to consult the local authority. Sources include review dates so you can check the current requirements before relying on them.
READY WHEN YOU HAVE A MOMENT
The included guides, flashcards, questions and your progress work offline. Maps and official web references need an internet connection. There is no account to create, no advertising and no subscription. Progress and notes are stored on your device.
On compatible devices with Apple Intelligence enabled, optional on-device generation can reword similar practice questions. Authored alternatives remain available when it is unavailable. Generated wording can contain errors; use the written explanations and linked sources to check your understanding.
SeaWise is an independent learning and reference companion. It is not a navigation chart, live voyage service, qualification or substitute for approved training and current official publications. Regional coverage is selective, and introductory professional content is not a complete STCW or merchant-navy training course.
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What's New in SeaWise
1.0
September 23, 2026










