seven years. 330. Attempt to set fire to crops, etc. Any person who— (a) attempts unlawfully to set fire to any such thing as is mentioned in section 329; or (b) wilfully and unlawfully sets fire to anything which is so situated that any such thing as is mentioned in section 329 is likely to catch fire from it, commits a felony and is liable to imprisonment for seven years. 331. Prevention and control of fires. Any person who— (a) without the consent of the owner or occupier of any land, wilfully or negligently burns any crops, stubble, grass, trees, bush or herbage on the land; (b) leaves any fire which he or she may have lighted or used or authorised to be lighted or used in the open air before the fire is thoroughly extinguished; or (c) fails to prevent any fire lawfully lit by him or her on land occupied or owned by him or her, or lighted with his or her authority or consent, from extending on to the land of any other person or from causing damage to the property of any other person, commits a misdemeanour. 332. Casting away ships. Any person who— (a) wilfully and unlawfully casts away or destroys any vessel, whether completed or not; (b) wilfully and unlawfully does any act which tends to the immediate loss or destruction of a vessel in distress; or (c) with intent to bring a vessel into danger, interferes with any light, beacon, buoy, mark or signal used for purposes of navigation, or exhibits any false light or signal, commits a felony and is liable to imprisonment for life.