Cruise ships do have facilities to detain passengers, but they are not full jails like those on land. Most cruise ships are equipped with holding cells or secure rooms to temporarily hold individuals who cause disturbances or break the law until authorities can take over. These spaces are typically small and designed for short-term use.

The staff aboard cruise ships are trained to manage security issues and maintain order, but serious crimes are usually turned over to local law enforcement once the ship docks. Understanding how cruise lines handle onboard incidents can help passengers feel safer during their trip.
Do Cruise Ships Have Jails Onboard?
As explained by this law firm from Miami, cruise ships are equipped with facilities to handle disciplinary issues and detain passengers or crew when necessary. These onboard holding areas serve specific purposes and operate under strict protocols. The following details explain what these facilities are, the reasons someone might be detained, and who manages onboard security.
What Is a Cruise Ship Brig?
A cruise ship brig is a small, secure holding area designed to temporarily detain individuals who have broken ship rules or laws. Unlike traditional land-based jail cells, a ship’s brig is often limited in size and scope but functions to safely contain passengers or crew until the ship reaches port.
The brig may include metal doors, reinforced walls, and locked compartments. It is not intended for long-term imprisonment but for short-term containment, usually lasting a few hours to a few days depending on the severity of the incident and local jurisdiction once docked.
Reasons for Detention at Sea
Detentions onboard occur for various reasons. Common causes include disruptive behavior, intoxication that threatens safety, theft, assault, or violations of maritime law. Some passengers might be confined for refusing to comply with crew instructions or causing damage to the ship.
More serious crimes require detainment until law enforcement at the next port can take custody. The detention ensures the safety of others and maintains order onboard during the voyage, preventing escalation until authorities intervene.
Security Personnel and Protocols
Cruise ships employ trained security personnel responsible for maintaining order. These officers have authority to detain individuals and operate the brig under company policies and maritime laws. Their duties include patrolling public areas, investigating incidents, and coordinating with local police when docking.
Protocols require clear documentation of all detentions, evidence collection, and communication with the ship’s captain. Security teams balance passenger rights with safety priorities, acting within legal frameworks relevant to the ship’s flagged country and international maritime regulations.
Legal Matters and Passenger Rights
Cruise ships handle legal issues onboard in strict coordination with external authorities. Passenger rights vary depending on the ship’s flag state and the location of the incident.
Coordination With Port Authorities
When a passenger breaks the law onboard, the ship’s security often detains the individual temporarily in a holding area. The ship then contacts port or local law enforcement for further action.
Authorities usually board the ship at the next port to take custody of the passenger. The legal process follows the jurisdiction of where the ship is docked or the flag state’s laws. Coordination ensures proper investigation and compliance with international maritime law.
Passenger Rights and Legal Protections
Passengers have rights based on the ship’s flag state and international treaties. They are entitled to fair treatment and due process during detention.
Cruise lines must inform passengers of their rights and provide access to legal counsel if requested. Passengers can appeal or contest charges under the applicable legal jurisdiction. The contractual terms in the ticket also outline passenger responsibilities and dispute resolution methods.
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