most facile way to move heavy toolcase up/down stairs?
 

ET onboard a ship. Have decided after time to have own tools. Got
them packed into one of those larger wheel-around, pull-the-handle-out
check-in hard-shell Samsonites. Ends up being a bit heavy, cause of
tool junkie genetic coding.

Works great..... except when have to go up or down ladderwells
("stairs", to you land pukes)

Better approach?