But, also, seagoing stuff just tends to get worn out in ways that land or even air assets don’t. So 50+ years for a ship is remarkably old and probably quite cl

But, also, seagoing stuff just tends to get worn out in ways that land or even air assets don’t. So 50+ years for a ship is remarkably old and probably quite close to the end of its life, even assuming that the shipowner is taking measures that wouldn’t be economic in the commercial world.