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This package supports the parsing of AIS messages in Java. AIS, the Automatic Identification System, is a system aiming at improving maritime safety by exchanging messages between ships, other vehicles in particular aircraft involved in search-and-rescue (SAR), and (fixed) base stations. To be precise, this package support the ITU-R M.1371-4 AIS standard. See our extensive javadoc and in particular the class AISParser for more information on how to use this package. The parser was used in the Poseidon project, and is improved in the Metis project to better handle uncertain information. Both projects were led by the Embedded Systems Institute. In both projects Thales Nederlands was the carrying industrial partner, and multiple Dutch universities participated.

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/* ESI AIS Parser
 * 
 * Copyright 2011/2012 by Pierre van de Laar & Pierre America (Embedded Systems Institute)
 * Copyright 2008 by Brian C. Lane 
 * All Rights Reserved
 * 
 */
package nl.esi.metis.aisparser;

/** This interface represents an AIS message of type 15: Interrogation.
*
* @author Pierre van de Laar
* @author Pierre America
* @author Brian C. Lane
*/
public interface AISMessage15 extends AISMessage {

	/** spare1
	 * @return int value of spare1 (2 bits [39,40])
	 */
	public int getSpare1();

	/** spare2
	 * @return int value of spare2 (2 bits [89,90])
	 */
	public int getSpare2();

	/** spare3
	 * @return int value of spare3 (2 bits [109,110] {or 4?} )
	 */
	public int getSpare3();

	/** spare4
	 * @return int value of spare4 (2 bits [159,160])
	 */
	public int getSpare4();

	/** interrogations
	 * @return AISMessage15Unit[] value of interrogations
	 */
	public AISMessage15Unit[] getInterrogations();

}