Only if CRT accept boaters' data, which it appears they don't:
"Herein lies the problem; we have asked for, and received the signings log for the last twelve months.
However, we were on the Trent and Mersey, the Shropshire, Ashton and Rochdale Canals last year; but have not been logged on any of these and have only been logged on the Peak Forest and Macclesfield Canals. When we asked if we could add our data and make any corrections, we were told you didn't accept boater's own data."
From this post earlier in this thread:
http://www.canalworld.net/forums/index.php?showtopic=74395&page=3#entry1524813