Front and back of a NautiCards nautical codes reference card showing semaphore, Morse code, phonetic alphabet, and flag signals.
Close-up of full-color nautical signal flags with labels explaining each flag’s meaning.
Close-up of a nautical codes card with semaphore positions, Morse code, and phonetic alphabet labels.
Back of a nautical codes card showing the international flag alphabet, number pennants, signals, and flag combinations at a marina.
Front of a nautical codes card showing flag semaphore, Morse code, and the phonetic alphabet at a marina.
Hand holding an 8.5-by-11-inch nautical signal flag reference card with its dimensions labeled.
Card showing international signal flags underwater with text 'Totally Waterproof & Super Rugged'
  • Load image into Gallery viewer, Front and back of a NautiCards nautical codes reference card showing semaphore, Morse code, phonetic alphabet, and flag signals.
  • Load image into Gallery viewer, Close-up of full-color nautical signal flags with labels explaining each flag’s meaning.
  • Load image into Gallery viewer, Close-up of a nautical codes card with semaphore positions, Morse code, and phonetic alphabet labels.
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  • Load image into Gallery viewer, Front of a nautical codes card showing flag semaphore, Morse code, and the phonetic alphabet at a marina.
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Nautical Codes & Flags Quick Reference Chart by NautiCards

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Nautical Codes & Flags Quick Reference Guide – Waterproof Maritime Signal Chart (8.5" x 11")

This durable waterproof reference card provides a comprehensive overview of nautical signal codes, including the International Code of Signals, phonetic alphabet, flag semaphore, and Morse code. Designed for wet maritime environments, it’s printed on thick, weather-resistant plastic and sized at 8.5" x 11" for easy readability and storage alongside your other sailing reference materials.

Whether you're a boat owner brushing up on marine flags, a sailing instructor teaching maritime communication, or a sailor looking for a reliable marine signal guide, this card is an essential quick-access tool for onboard use or dockside study.

Key Features:

  • Illustrates key maritime communication systems: flag semaphore, Morse code, phonetic alphabet, and full international signal flag set
  • Shows common flag combinations and their meanings from the International Code of Signals (INTERCO)
  • Full-color, clearly labeled diagrams designed for fast reference in real-world conditions
  • Waterproof, heavy-duty plastic card stands up to saltwater, UV, and repeated handling
  • 8.5" x 11" format, pre-punched for mounting in a binder or cockpit bulkhead

This marine signal cheat sheet is a compact, rugged, and user-friendly alternative to bulky nautical books. It’s a perfect sailing gift for boaters, mariners, and instructors—and a top choice for anyone looking to master nautical codes and flags in a format built to last.