(1)If any horse shipped from any port in Great Britain to any port outside the British Islands has a limb broken or is otherwise seriously injured while on board so as to be incapable of being disembarked without cruelty—
(a)the master of the vessel shall forthwith cause the animal to be slaughtered; and
(b)every vessel on which a horse is so shipped shall carry a proper killing instrument, to be approved by the Ministers for that purpose.
(2)It is the duty of the owner and master of every such vessel to see that the vessel is provided with such an instrument, and the master, if so required by an inspector, shall produce the instrument for his inspection.