Holding back someone else’s property. The detainment clause in the Institute War and Strikes Clauses (HullTime) provides that a vessel detained 12 months or more is treated as a constructive total loss. However, clause 5 excludes detainment by or under the order of the government or other public of the country in which the vessel is owned or registered. It is also excluded if detainment is due to infringement of any trading or customs regulations.