PC as chartplotter?
Gerhard''s exactly right; this is very common on boats.
Based on how you stated your question, I''ll bet you would appreciate reading a boat web site I just visited today.
www.yachtvalhalla.net/articles/imagelogs/imagelogs.htm is an article the Cap''n wrote on how to illustrate ship''s logs using chart segments from the laptop but refers you to Sea Clear II software, which is one of the free navigation software products out there today. (Mind you, the software does all the clever stuff but you still need the chart media, usually on CD for laptops).
BTW, an interesting site: the author is a retired Army officer who''s been cruising non-stop in the W Pacific for many years now on his Fuji 32.