British Admiralty Instructional Chart 5053: English Channel - Western and Central Portions Admiralty Routeing Charts for Mediterranean and Black Seas The navigation chart size is

The navigation chart size is 25″ x 38″

and basic seamanship

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British Admiralty Instructional Chart 5053: English Channel - Western and Central Portions Admiralty Routeing Charts for Mediterranean and Black Seas The navigation chart size isBritish Admiralty Instructional Paper Charts are useful for training and examination purposes. They are not maintained for the latest information and should not be used for navigation. The UKHO (United Kingdom Hydrographic Office) provides these charts to be used by students to practice traditional chart work. They are often used by maritime colleges and nautical schools to test their students in navigation practice.