Ship Security is very visible onboard. Not only do they man the gangway to prevent unauthorized persons from boarding the ship, they constantly roam the ship looking for anything out of the ordinary. Regardless, incidents such as theft or heated arguments do occur, as in any community. It is very unwise to keep large quantities of cash in your cabin. Send your money home (the best option, as you cannot carry more than $10,000 US with you when you return home) or consider renting a safety deposit box from the crew office. These Incidents are very rare, but it's always a good idea to take precautions. Always treat everyone with courtesy and respect.