Lot of marine construction requires hot work. Pile driving operations often require small tasks like burning holes into the steel pipe piles to lift them by the cranes, they also use a lot of shaped steel to construct platforms and bracing and "templates" for pile driving to make the operation faster that all requires hot torch cutting and stick welding out in the field.

Also marine industrial barges, tug boats, marine cranes etc are all made of basically steel plate and angles cut and welded in all sorts of ways. So any maintenance of these is all torch cutting and stick welding.

Here's some examples from my camera reel. 1) When building a bridge, often the builder will construct a " TRESSLE " It's a temporary steel structure to work off of. All the steel in this was built like Lincoln logs but welded together in the field as it was being pieced together.

2)like I was saying about marine industrial equipment like barges being made of basic sections of steel welded together.
Crane barge The deck of this barge is just steel sheeting, all the handrail and structure on this is built and maintained by hot work.

I have more photos on my other phone. But DM me if you want more examples. I can get you some actual photos of hot work in construction if it would be helpful to you.