A few quick things.
First, the flag you're using is wrong. Firstly, its the commerce flag, not the naval flag, and secondly, it's far too big for its use. In the Royal Norwegian Navy and Coast Guard of Norway, the sea flag (which is the one you have depicted) is relatively small, as
this picture of HNOMS Tyr (N50) demonstrates. There is a good variant in the "Ensigns" file, found in the "Parts" area of this forum somewhere.
Secondly, the writing on the side of the Coast Guard Vessels reads "
KYSTVAKT", not "KYSTVAKTEN". See
this picture of NOCGV Andenes (W322) for demonstration.
And ex-HEIMDAL was the subject of a SINKEX with the subs a few years ago IIRC.
wow wow. sorry for that. I was just a little quick on the turn with the writing.
And when it comes to the flag. Norwegian Navy have two different flag. That I have drawn plus another slightly different flag. but the flag is not wrong, the blue would have perhaps been a little darker, otherwise it is correct. And it is not forbidden for the commander on board to hoist an extra large flag if he wants to do it.
But I'll be kind to you today, so I shall post pictures of the boat with some other flag.