I note in the book that most of the divers also were carpenters. This makes sense, since a lot of repairs to lock gates could be made underwater without having to drain the lock and disrupt traffic, as well as being very expensive.
Following up on the James Scott story, I’ve put together a table of divers/carpenters for the period 1892-1921, roughly the period that James Scott was active. The daily wage is also given: notice that it varies. This is because the “Management” was very cost-conscious and varied the wage according to the perceived degree of skill and difficulty involved in a particular job.
The table doesn’t show (except in one case) where the work was being done. Over time, the number of days worked isn’t noted, just the daily wage.
Finally, in 1908 a John Scott is shown as a diver, along with James Scott. James did have a brother John, but as yet I cannot verify that he is the “John Scott – diver” mentioned in the record.
Here is the table.