All down to U.M.S. On the modern Motorship the Engineers no longer work Watches but Day Work with one Engineer on Standby Duty at night with an automatic alarm in his cabin if an alarm condition come up he will also have a stroll around the Engineroom with Torch at intervals decided by the Chief Eng. U.M.S. came in during the 1960's and had crossed over from land based installations like Oil Refineries, unfortunately putting the system on a rolling creaking vessel proved to be a nightmare for Engineers due to the number of false alarms the system raised because of interference from other sources aboard the ship. The system also gave control of the main engine movements to the Bridge, my own experience of U.M.S. was that from the Master downwards nobody trusted it and the system did have its shortcomings highlighted in the increase in Engineroom fires as it could not see/smell/taste a split in a pressurised fuel pipe which sprayed fuel over a hot surface of which there are plenty in the Engineroom. Since then the system has been refined but judging by the number of vessels colliding with jetties I have seen on U tube it would appear to still have it's problems. There is nothing like the clang of the old style Telegraph and the Movements Log.