"Is it legal/advisable?"
Does it encourage "best practice"?
Concerns with alarms and settings
Which DGPS receiver is primary and which secondary - and why should I know?
Checking passage plans on small screens
With our ECDIS in "route monitoring mode", it is impossible for the OOW to 'temporarily view' an area of chart (ENC or ARCS) that does not encompass the ships own position.