After some external review it would be best to revamp the tow-to-port model now that it works and does pretty well overall compare to other models.
[ ] Swap out the monthly fee for an annual lease fee
[ ] Include port usage fees
[ ] Include tugboat mobilization costs
[ ] Tugboats should attempt to find a suitable weather window prior to beginning the travel out to site, reducing the overall weather delays associated with tugboats
After some external review it would be best to revamp the tow-to-port model now that it works and does pretty well overall compare to other models.