The watch crew decides what to wear based on the weather conditions at the time when you place them on the watch tower. If it is clear and sunny, they will wear regular clothes until you submerge and resurface or you send up a new watch crew that will decide on their own what to wear based on the weather conditions at the time you send them on the watch tower. Their clothes do not change over the course of a day as weather patterns change. therefore you may see a watch crew in the dead of a winter storm wearing regular clothes.
If the weather is rainy and stormy when you surface or change watch crew they will wear rain gear. it is all based on the weather conditions when you send them up.
Their clothing choice does not reset unless you replace the entire watch crew, OR you hit "P" to begin the dive sequence, when the watch crew comes below deck then hit "S" to bein the surface sequence. the watch crew will automatically wear the correct gear based on the conditions that you send them up in... their choice of clothing does not change based on the weather change.
it would have been nice if the watch crew was automatically cycled every 6 or 8 hours, this would correct the issue of clothing choice to an extent.
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