William J. Brennan, Jr., Calbeck v. Travelers Insurance Company…
“ A vacuum would exist as to any injury which, although occurring within the constitutional domain of 'local concern,' was in fact not covered by any state statute. A restriction of federal coverage short of the limits of the maritime jurisdiction could have avoided defeating the objective of assuring a compensation remedy for every injury on navigable waters only if Congress had provided that federal compensation would reach any case not actually covered by a state statute. ”
