I really have no idea what is acceptable in an admiralty court but I do know what the Navy uses and how it is used. First, the log book is firmly bound. No pages may be added or deleted from the bound volumn. In addition to the required/desired information such as: Who is on watch, course, speed, position, radio transmissions and receptions and various observations such as weather, sea state, etc...there were a few other rules which were followed. It was always written in ink. There are therefore no erasures. If an entry was incorrect it was struck through with a single line and initialed. Never scribble anything out. The first entry is at the very top of the page. The last entry of the page, if not at the bottom, is followed by a diagonal line from the last entry to the bottom of the page with the words "No further entries this page" written along the line. ^From these simple rules it is clear to decipher the intent of the log...no lines unwritten on for a complete page; thus, no ability to go back and "write between the lines". In addition, and this is maybe the most important thing, the first entry of a new year was given special attention. A very colorful description was given to the facts of the voyage. Where the ship was headed, how great or dreary the current conditions, the mood of the crew....whatever fit the situation and kept with the facts. Navy traditions die hard...:) Have a great day, Joel Wilkins LT US Navy