| On edit What effect this has on shipping depends upon the IMO Conventions. As
international agreements they require the EU to bend their rules to
accomodate them. I havn't found confirmation. But I think Licenced Navigators are
Required to record there speeds, intended and Actual, on the Chart in
Knots. Under the Course line with the heading in degrees above the
course line. Which makes the use of instruments indicating speed in
knots necessary. J |