I'd agree that the transit schedules probably havent changed in 10 years, but working smarter instead of harder has been a change in many industries.
that tranship containers were not available 10 years ago; also Australia
, for example, had a wharfe dispute because the waterside workers could only load/unload 12 containers per hour where the world rate is 24 and building to 30 per hour.
Ships must have saved many hours there, so though on the same shedule can go slower and cheaper to get there.
Another thing may be if theres 2 captains: both do the same number of miles per year but one captain
uses a few thousand tons less fuel
. Who is the 'better' captain
Ships do not leave 5 nms clearence from a headland... they shave the front gate of the Lighthouse keepers cottage. they miss yachts by meters because they don't want to waste fuel going a half a mile out of their way so you feel safer.
Ships Captains should read our threads demanding all to use paper charts
because they would have the biggest belly laugh... electronic navigation
means they can leave Panama
and know precisely what speed they need to do each minute to dock
at 8am next thrusday week when they are sheduled to be there. They don't anchor
off the port for 2 days waiting... they just get there on time..
I bet they have a whole range of 'tricks' to save every litre of fuel they can.