In a post of November 5, 2013 by Brian-Usa "Mooring in single player" the maneuvers for a good Mooring were explained, and there was a link to another interesting post http://forum.shipsim.com/index.php/ topic, 20837.msg281515.html # msg281515
where it was explained the buoyage system can also be found here as well as a simplified note on the International regulations (COLREGS) :-
Over time the photos are no longer available, it could update and re-illustrate this two subject (mooring and buoyage system) which I find of great importance.
Thanks in advance
Fly1937 Gianni