During a voyage from Visby to Oskarshamn, the vessel ATLANTIC ran aground just south of Oskarshamn. The master, who was alone on the bridge at the time and had the Bridge Navigational Watch Alarm System (BNWAS) turned off, has stated that he fell asleep just after he made the turn north of Öland towards Oskarshamn. The information is supported by the vessel’s AIS track, which shows that no course corrections were made following the turn.

At 1705 on 3 April 2010, the Chinese registered bulk carrier Shen Neng 1 grounded on Douglas Shoal. The ATSB investigation found that the grounding occurred because the chief mate did not alter the ship’s course at the designated course alteration position. His monitoring of the ship’s position was ineffective and his actions were affected by fatigue.

During the investigation process on board Ince Inebolu and the meetings held between
the Investigation Team, the Company΄s representatives and vessel΄s Officers, it was
generally striking and mystifying how the OOW slept for over two hours sitting on the
bridge chair, in an almost upright and not so comfortable position.

At 0332 on 25 July 2021, the cargo vessel BBC Marmara ran aground on the island of Eilean Trodday while transiting the Little Minch, off the west coast of Scotland. The vessel was on passage from Foynes, Republic of Ireland to Scrabster, Scotland. The MAIB investigation found that: The officer of the watch was asleep when the vessel ran aground. He was alone on the bridge as there was no lookout, and the bridge watch alarm was disabled;

At 0443 on 18 July 2018, the Netherlands registered general cargo vessel Priscilla ran aground on Pentland Skerries. When approaching Pentland Firth, Priscilla was set to the south of its planned track but this was not observed because the officer of the watch did not monitor the vessel’s progress for about 2 hours; instead, he sat in the bridge chair and watched videos. It is also possible that the officer of the watch fell asleep periodically.

In the early morning hours of 24 July 2004, the loaded container vessel Horizon was downbound from Montréal, Quebec, in clear weather. While off Saint-Anne-de-Sorel, Quebec, the vessel overshot alter course position and grounded along its entire length. The pilot, seated on the port side of the wheelhouse and having the conduct of the
vessel, did not order a timely course alteration. Fatigue may have been a factor in the pilot’s decreased vigilance at a critical time.

At 04:13:43 on 20.09.2021, the motor vessel “Vera Su”, navigating from the port of Yuzhniy, Ukraine to Varna, loaded with 2 837,201 mt Urea, missed a way point for joining in the Traffic Separation Scheme due to the falling asleep of the second officer and ran aground on the Bulgarian coast in the area of Yailata Protected Area.

It is probable that the accident occurred because a Second Officer who was on the sole look-out on the bridge had fallen asleep, while FLEVODIJK was proceeding north-eastward through the Harima Nada Sea toward the west entrance of the Akashi Strait with the autopilot steering at night, and she proceeded toward the Sea Wall and collided with it.

On 28 November 2012, the bulk carrier Tundra departed Montréal, Quebec, under the conduct of a pilot, downbound in the St. Lawrence River for Halifax, Nova Scotia. At approximately 2148 Eastern Standard Time, the vessel exited the navigation channel and ran aground off Sainte-Anne-de-Sorel, Quebec. Fatigue was a likely factor in the pilot’s diminished situational awareness at a critical time when a course change was required.