Puzzle 759 Submarine

For several days you have been on a luxurious cruise through the enchanting Caribbean Islands. Currently, the ship is anchored in the port of San Juan, Puerto Rico, and you disembark to explore the harbor. Away from the crowd, you notice an old man fiddling with a strange vessel. As you approach, he greets you and tells you about his homemade submarine. According to him, he built it to be able to search for shipwrecks in the area. Unfortunately, he is now too old to launch the submarine by himself. When he offers you the opportunity to attempt the dive in his place, your adventurous spirit awakens, and you gladly agree. You listen as the old man quickly explains how everything works, climb aboard, and dive down. Very soon after submerging, something goes wrong: the old boat breaks down, the situation spirals out of your control, and you head for the bottom. The main pressure line has burned out, and the engines have stopped working. What now? How can you fix the breakdown? Will you be able to find the necessary parts in all this chaos and confusion to repair the engines and get the submarine back in operation? Or will you meet a tragic end here, becoming food for sharks?

The package contains a puzzle consisting of 759 perplexing pieces, one set of instructions in different languages, and an envelope with answers. Difficulty level 4.