I don't think you have those programs for free. You could use the electronic chart cataloque of the British Admiralty to collect all the charts you need.
http://catalogue.ukho.gov.uk/home.asp
For making waypoints including bearings and distances, and ocean track planning (great circle, rhumb line and/or composite track) you could use CNAV. You can also use CNAV for astronomical navigation, tide calculations and such.
http://www.hydro.nl/pgs/en/software_en.htm