Boats, locomotives, robots.
But should we insist on "she" or "they"?
«BMW has also used a Boston Dynamics Spot robot, which is shaped like a dog, as a maintenance watchdog.
"He had to be able to walk stairs," says Nikolaides[, head of process management and digitalisation at BMW]. "He was able to go down to the basement where a lot of machinery was."»
Of course, if Nikolaides spoke German, he may have simply matched the gender of "robot", which may well be masculine in German (as it is in Czech and other Slavic languages).
BBC article:
BMW says humanoid robots are the future of car production
<https://www.bbc.com/news/articles/cgmpwzzvxr2o>
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