i suppose it depends on where abouts ,, in a narrow or bouyed channel from what i remember a boat of less than 20 meters shall not impede a larger vessel constained by draught,
so if it is in the confines of a bouyed channel and something goes wrong ,perhaps the ship runs aground because you were in the way owing to it having taken evasive action i am not too sure where the blame would lie for a tug tow off or at at a court hearing/inquest or claim for a salvage recovery..
.think best thing is to keep well away ,,anyhow who wants to look up at a wall of steel plates ,,you can see better from a safe distance.