Sailing in ancient time

Within the large wide ship, at the sea. The Captain sail to the North Of Atlantic Ocean, there's crocodile under the ocean it kills more than 20 people in 1 year. In ancient time people sailing that way if they stay on the sea for a long time they got a lot of vitamin c the efficiency so they brought with them orange to stay healthy. One time somebody saw a ship and they whole curl of that ship had all collapsed because of vitamin c the efficiency , these day this is not a problem because they can take supplement.