Answer:
Storms and diseases.
Step-by-step explanation:
Storms, food availability and diseases are the problems you expect to have to deal with during the voyage because the storms and ocean diseases occur to the people traveling in the voyage. Storm is the major problem facing by the people during travelling into the ocean because it is unexpected and they have to deal with it. Diseases also occur to the people during their travel and sometimes due to long journey people face food scarcity.