ary charts, what should you possibly do?Р28.what is safety speed during sailing? What factors should you consider in deciding the speed of a vessel during sailing in the sea?Р29.when navigating in a crossing situation , as master or duty officer ,what anti-collision measures should be taken? When the vessels are proceed on head-on condition,what anti-collision rule should be observed? When a power-driven ship and sailing meet in the sea, what anti-collision rule should be observed?Р30.you are the watch officer at anchor on an 8000-tons ship which is about 400 feet long, if the weather es foggy and foggy , what jprecautions should you take?Р31.when should a turnover (handover) of watch be deferred or postponed?Р32.under what conditions should you as officer on watch change the ship’s speed?