'Watertight' in the Bible

When she could no longer hide him, she got him a basket (chest) made of papyrus reeds and covered it with tar and pitch [making it waterproof]. Then she put the child in it and set it among the reeds by the bank of the Nile.

The responsible men of Gebal and its wise men were in you, making your boards watertight: all the ships of the sea with their seamen were in you trading in your goods.

Your wealth and your goods, the things in which you do trade, your seamen and those guiding your ships, those who make your boards watertight, and those who do business with your goods, and all your men of war who are in you, with all who have come together in you, will go down into the heart of the seas in the day of your downfall.