The War Pensions (Naval Auxiliary Personnel) Scheme 1964

2.  A war risk injury is a physical injury sustained on or after 3rd September 1939 at sea or in any other tidal water or in the waters of any harbour and attributable to—

(a) the taking of measures with a view to avoiding, preventing or hindering enemy action against ships, or as a precaution in anticipation of enemy action against ships, or for rescue or salvage purposes in consequence of enemy action against ships; or

(b) the absence, by reason of circumstances connected with any war in which His Majesty may be engaged, of any aid to navigation for ships, or of any warning of danger to ships, being an aid or warning which would be normal in time of peace; or

(c) the carriage, by reason of circumstances connected with any such war as aforesaid, of any cargo in a manner which would be abnormal in time of peace and involves danger to the ship in which the cargo is carried or to her crew; or

(d) the existence on board ship of any other conditions arising out of any such war as aforesaid which would be abnormal in time of peace:

Provided that—

(i) in relation to injuries sustained in the waters of a harbour, the measures specified in subparagraph (a) of this paragraph do not include the prohibition or restriction of lights other than navigational lights; and

(ii) in relation to a salvage worker, or the master or a member of the crew of a salvage vessel, the references in subparagraph ( a) of this paragraph to measures taken for salvage purposes shall not apply.