These people who traveled on ship went through a lot of problems. The ones who survived are lucky to reach their destination. Also, to be alive throughout how many days they were at sea.
The people who have survived and lived here lived a normal life. They build homes and make their own food. The people who has survived, well they lived like they started a new life .
I choose scenario 3. some people when they travel on boat they face a lot of bad weather, hunger and even not knowing were they are headed . This can cause a lot of problems. Bad weather can cause ship sinking and hunger can kill people. They didn't have enough food because they got lost in the middle of the ocean too long.