Adhesion and cohesion always fuck up scenes that combine scale models and water. Splashes always look very wrong, and in the case of a submersible bubbles could be a problem. Smoke chamber makes sense.
Although in the days since “O Brother Where Art Thou?”, when they added dust-yellow color to the entire movie in post, maybe there are other ways now, if you didn’t want to go entirely to CGI.
Although in the days since “O Brother Where Art Thou?”, when they added dust-yellow color to the entire movie in post, maybe there are other ways now, if you didn’t want to go entirely to CGI.