<https://www.marineinsight.com/marine-navigation/how-deck-officers-can-use-np-294-to-keep-admiralty-products-up-to-date/#webpage>
<http://schema.org/description>
"The nautical publication numbered NP 294 is a great aid for deck officers as they take guard of their parallel rulers and start with passage planning for their ships."
<https://www.marineinsight.com/marine-navigation/how-deck-officers-can-use-np-294-to-keep-admiralty-products-up-to-date/>