Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature currently requires accessing the site using the built-in Safari browser.
Mark,
See if this helps:
http://chartcatalogue.c-map.no/other/nt/quickref.asp?quickrefID=UIN&us_crtr=1
You already found this one:
http://www.landfallnavigation.com/fhs.html