01Navigability requires factual research
The lake’s physical and commercial connections, historical and present use, access to interstate waterways, dams, locks, and practical capability for navigation may matter.
A recreationally busy lake is not necessarily navigable for admiralty, and a lake entirely within one state is not necessarily excluded. The governing test is legal, not colloquial.
02Rental and resort operations can expand responsibility
Liveries, marinas, resorts, boat clubs, and rental platforms may control vessel condition, required equipment, screening, instruction, warnings, capacity, and checkout procedures.
Preserve agreements, waivers, training videos, checklists, maintenance, reservations, payment records, and communications.
03State insurance and owner-liability rules may be central
Homeowners, watercraft, umbrella, rental, resort, commercial, and health policies may respond differently. Policy territory and exclusions should be examined.
State negligent-entrustment, owner-liability, recreational-use, premises, products, and comparative-fault rules may control if maritime law does not.