Advanced manoeuvring between the bridge piles with a strong outgoing tide. Training to work in close quarters to other objects whilst maintaining a safe distance, while the current is trying to push you into things!
Also learned a new excercise on the pole moorings to test helm, bow line handling, stern line handling and effective communications between all crew members.
Links:
[1] http://coastguardmana.org.nz/users/mark-presling