A ship provide access control and a safe and secure environment. The construction is superior to any temporary mobile structure and a ship have the ability to leave to avoid inclement weather if needed. If you just survived one natural disaster or came to the aid of survivors, there is no reason to be unprotected and immobile in a not so sturdy mobile or temporary facility. A ship is self-contained, produce its own electricity, have freshwater on board and treat wast-water to environmental standards. Access control and security for residents and staff is an manageable task in a port environment.