Arkathan
Emperor Mongoose
I had previously suggested that as the reason there are only twelve mortgage payments per year, in spite of there being thirteen opportunities for the bank to suck funds from their<Thread Drift> I know it came up some where, but has anybody considered that if a month consists of four weeks, there are thirteen of them in a year? If you do repairs in four week increments, your year ends somewhere in early December (Trav Equiv).
Personal suggestion is to do twelve months of casual maintenance, and put the ship in port for the annual maintenance in "month thirteen".