Calling on the knowledgeable. We all know about the clashes of titans like the Battle of Jutland, but I was wondering about the smaller crafts that could have been involved. Are there any known initiatives that might have used riverine warfare? Was the technology to make such smaller crafts even available, as in like some ships still used coal and were transitioning towards the use of oil. Would there have been engines proper as to accomodate that kind of warfare? What type of propulsion tech was used for landing crafts like those used at Gallipoli? And yes, I know those were more widespread in WWII and Vietnam for example.