If, save for just and sufficient cause, any ship which is liable to forfeiture or examination under or by virtue of any provision of the Customs and Excise Acts 1979 does not bring to when required to do so, the master of the ship shall be liable on summary conviction to a penalty of F1level 2 on the standard scale.

Where any ship liable to forfeiture or examination as aforesaid has failed to bring to when required to do so and chase has been given thereto by any vessel in the service of Her Majesty and, after the commander of that vessel has hoisted the proper ensign and caused a gun to be fired as a signal, the ship still fails to bring to, the ship may be fired upon.