Maps, charts, codes...
When is a map a map and not a chart?
Is "codes" a one-time pad and a codebook, for decoding notams?
This bollox was written in the 16th century, when navigators were real men who either used their sextant correctly, or they got to walk the plank, and the rest of the crew then starved to death, and their ghost ships foundered on the rocks on some distant continent.
Nobody could get prosecuted in the UK under this kind of wording, IMHO, for simply not carrying any nav data with them.