text: Maintained old machinery is working everyday.  The US Air Force flies B-52 bombers,  daily,  and the last one was built in the mid 1960s.  Very successful halibut boats from Seattle currently fishing in the Gulf of Alaska are close to or over 100 years old.  Do their work,  make their money,  and the boat goes to the shipyard yearly and is maintained in top notch condition.  None of those power schooners is lost to the fury of the ocean,  but can fall victim to neglected maintenance,  just like a fairly new auto or recreational boat.