There has been an increasing interest on the effects of the United Nations Convention on the Carriage of Goods by Sea (Hamburg Rules) on the double insurance problem which arises whenever a proposal to modify a carrier's liability regime is under discussion.
Lee, Eun Sup
"Analysis Of The Hamburg Rules On Marine Cargo Insurance And Liability Insurance,"
ILSA Journal of International & Comparative Law: Vol. 4
, Article 6.
Available at: http://nsuworks.nova.edu/ilsajournal/vol4/iss1/6