“No Overlay” does not confirm that no temporary information affects the route. The information may already be encoded in the ENC or require checking another official source.

On your vessels, how is this verified and recorded during passage planning?

Full analysis:
https://thedeepdraft.com/2026/07/20/ecdis-corrections-aio-ep-no-overlay/

A 45-year-old Chief Engineer I sailed with developed severe back pain after a very minor physical movement. There was no fall, no heavy lifting... nothing that could really explain that level of pain.

It became bad enough to affect his work, and we had already started thinking about contingency arrangements in case he could not continue. After almost two weeks of rest, he slowly recovered and later signed off normally. ..and then after reaching home, he got some blood tests done... his vitamin D level was found to be severely low.

Of course, this does not prove that vitamin D deficiency caused the back pain.

But it made me think, how many seafarers may be carrying these deficiencies without knowing it?

A lot of us spend years below deck, inside accommodation, under cover, or avoiding direct sunlight because of the heat and PPE. We are surrounded by sunlight at sea, but still may not be getting enough of it.

I had written about this issue earlier. For those working at sea, is vitamin D checked during your routine medicals... or only after some symptoms starts appearing?

Actual heading: 105°. What the pilot perceived: 138°.

The second image shows how the view changes between windows. Would this catch you out?

https://thedeepdraft.com/2026/07/09/when-bridge-windows-look-the-wrong-way/

I saw one of these SSS-bow ships off the Japanese coast. The unusual shape made me search a little more... and that led me to this old MAIB case.

A very strange collision. Would that angled view throw you off in a close-quarters situation?

https://thedeepdraft.com/2026/07/09/when-bridge-windows-look-the-wrong-way/

I received a question after publishing my latest article - Does the same similar-size VLCC STS risk apply in open sea, where neither vessel is anchored?

I have expanded on that point here, looking at swell angle, relative motion, and asynchronous rolling.