What does 'inland marine' insurance cover?

INLAND MARINE INSURANCE (confusingly named): Originally covered goods transported on inland waterways; evolved to cover movable property and transportation risks broadly. MODERN INLAND MARINE CATEGORIES: Floaters for individual items: personal articles, cameras, jewellery, musical instruments; Contractor's equipment: tools and equipment off-premises; Installation floater: materials and equipment during installation; Builder's risk: structures under construction; Motor truck cargo: goods being transported; Bailee's customer: property of others in the insured's care; Accounts receivable: loss of records; Computer equipment: electronic data processing; WHEN TO USE: Property that moves off the primary premises; property not well-suited to standard policies; high-value items needing agreed value without sublimits; ADJUSTER NOTE: Inland marine policies often have broader coverage terms than standard property policies — they may include mysterious disappearance and breakage of fragile items.