Still works with 2025.1.1

Thoth,
Are you referencing when your skipper is on the periscope and has a helper attached to them? If that's your question, I do not know of a way to prevent that from happening.

I usually have a separate watch officer with helpers attached, which then allows me to then operate as the skipper independently.

Is there a way to forbid helper sailors to use observation periscope?

I tried to check in Crew.xlsx, but all sailor-related actions seems affect only sailors on duty, and not the helpers.

I use "No fatigue" by Shole
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2567998029&searchtext=fatigue

Which mod do you use to prevent sleeping?

Eridano2013- hmm, well that definitely is something I didn't test for, since I use the mod that removes the sleep requirement for officers. I'll take a look and see if there is anything that can be done. But for me personally, I'd rather not have to worry about sleep requirements in a Uboat sim.

@Sigfan86
when the skipper is completely exhausted, neither he nor anyone else can use the periscope... what to do in this case? An exception is needed.

Tell me about it! Haha yeah i linked it in the description

Dramaticuser- unfortunately this requires a new start since it modifies datasheets. Its possible that a change in boat might cause datasheets to be re-loaded?

DECAF- Yea i was definitely unsure if it would have been possible to perform with datasheets. But im glad it was this easy. Took some poking around and research.

Tequilla- This also pairs nicely with the "Keep your periscope wet" mod. Since the AI wont be trying to get you killed by raising the scope un-necessarily.

Seems like this has the added bonus of making the periscopes only used when selected manually. Even if the skippers observation task is set to 99 he will not automatically use the periscope when diving. For me this is fantastic, as it means I'm not just travelling around with my periscope up and the skipper can be doing something more useful when transiting underwater.

God tier mod! thank you!

save compatible?

long awaited mod... thank you!

Oh wow this is great! I didn't know this would be possible through data sheets alone.

Yea, I was always annoyed that the devs never broke out the different observation devices in the schedule. Ive been using as many realism mods as we have available and when performing a torpedo attack, my officers always try to use the periscope which tends to get me caught by destroyers or deck crew

wow sounds like a great mod!

Simple modification that prevents all officers from using the periscope except for the skipper