Have to admit that when it comes to harbour entrances and the like up here in NW highlands I copy and print out for free to A4 sizes from origional Admiralty Charts circa 1860s held by National Library of Scotland which have the beautiful 3d contour shadings of surrounding hills plus sillouette drawings of views when on correct headings thru narrows etc..
I also have several full size facimile copies on good quality chart type paper of Charts no longer printed by the Admiralty-Eg approaches to Arisaig Bay-again 1860s vintage-again printed by National Library of Scotland for about £8 incl.postage.
Those who use Martin Lawrences pilots will see many of these drawings -still valid-which can also be found in Admiralty Pilots for Scotland(1970 Ed)