Hi TFM,
She's showing 3 all-round-visible red lights, meaning that she is restricted by draft. All other vessels (including sailing-, and fishing vessels) should give way to her.
I tried it on SSE and it looks like that only the Pride of Rotterdam shows 3 all-round-lights. All other vessels show 2 all-round-visible lights which are the right lights.
They aren't consistant with the lights in SSE, in some occasion they show only 2 red all-round-visible and in other occasions they show the same lights in combination with the anchor lights. Just the 2 red lights means that the vessel is not under command and not underway but afloat. The combination with anchor lights, means she's aground.