I just found this on the MAIB report into a ship grounding.
It is an annex from PO Ferries procedures manual for bridge officers. I appreciate some here are already well versed in it, others of us are not.
http://www.maib.gov.uk/cms_resources.cfm?file=/POC_Annexes.pdf
Still, whether the publishers of this document are still running ships is a different matter.