Offenses While on a Philippine Ship or Airship

     Requisites:
1. Crime is committed on board a  private or merchant ship;
2. The ship or airship must be registered under Philippine Law; and
3. The crime must be committed while the registered Philippine ship is on international wateres.

The Revised Penal Code  applies when such Philippine vessel is found within:
     1. Philippine waters; or
     2. The high seas.

Foreign Merchant Vessels
     1. The French Rule
     General Rule:
     Crimes committed aboard a vessel within the territorial waters of another country are not triable in the courts of that country.
     Exception:
     If the commission affects the peace and security of the territory or when the safety of the state is endangered.

     2. English Rule
     General Rule:
     Crimes committed aboard a vessel within the territorial waters of another country are triable in that country.
      Exception:
     When the crime merely affect things within the vessel.

Foreign Warships
     Warships are always reputed to be the territory of the country to which they belong and cannot be subjected to the laws of another State.