This looks très bien.
J'ai quelques questions et commentaires.
I wasn't sure what the scanner/echo/sonar was telling me. Does each one solve a different puzzle? I put the items on the squares but nothing happened. I tried both facing the top deck and away from it. Two of the squares near the stairs didn't move down but the items sank (and some fell through the floor when dropped from a height).
You can walk straight through the walls to the outside. Or even float around inside when you move from the upper deck.
Is the morse code needed? It was difficult to hear with the background sounds.
I inserted the fuses down below (where you see the squid eye) and in the cabin (where you see the tenticles) but neither lever did anything?
It is fun and has me hooked but I can't get very far.