You cannot go by that simulation , AIS transponders only send out a position course and speed every 20 seconds or so and it looks like some data wasn't shown ( depends on if the shore receiver pc was working properly and sending the data to the website that logged it )
I have seen 2000t oil rig supply vessels in the North Sea steaming at 16 knots without anyone on the bridge and almost running us down ( 87ft steel trawler in broad daylight ) , men have been killed due to it off Scotland
http://www.heraldscotland.com/sport/spl/aberdeen/fisherman-lost-at-sea-after-collision-sinks-boat-1.692737 Fisherman lost at sea after collision sinks boat GRAEME SMITH Monday 27 February 1995
A FISHERMAN was lost at sea last night and his five crewmates rescued when their boat sank after being involved in a collision with a 2300-tonne North Sea supply vessel. The 11-year-old Arbroath-registered Sharridale, a 72ft, 50-tonne seine netter, had only sailed out of Aberdeen yesterday afternoon following a three-day break.
She was 20 miles east of Peterhead on her way to the fishing grounds in ''near perfect visibility'' when the collision occurred with the Hamburg-registered Huntetor, a 2341-tonne oil supply vessel owned by OIL Ltd of Aberdeen.
The fishing vessel sank almost immediately and the Huntetor, which suffered no significant damage, launched a fast rescue craft which was able to pick up five of the crew.
The missing fisherman was last night named by police as Mr Gordon Smith, 40, of Rossie Street, Arbroath.
His fellow crew members were named as skipper Neil Teviotdale, of Monymusk Road, Mr George Teviotdale, 43, of Noltiloan Road, Mr David Teviotdale, 30, of Bellevue Gardens, and Mr James Smith, 34, also of Bellevue Gardens, all Arbroath.
Police were witholding the name of one other survivor until relatives had been informed.
A coastguard spokesman said the beacon from the sunken vessel was giving them a very accurate position on which to centre their search.
Members of skipper Neil Teviotdale's family have been fishermen for several generations. Mr Teviotdale's brother was lost at sea in a fishing accident several years ago. His late father survived the loss of his fishing boat.
The Sharridale survivors were last night brought into Aberdeen on board the Huntetor as the search for Mr Smith continued.
The Department of Transport's Marine Accident Investigation Branch is to hold an inquiry into the incident.
http://www.fishupdate.com/news/archivestory.php/aid/3301/Scottish_trawler_sinks_after_collision_with_Norwegian_supply_boat.htmlhttp://www.maib.gov.uk/cms_resources.cfm?file=/harvester_strilmoy.pdf