Actually you can totally swim in plate. A suit of armor weighs about 50 or 60 pounds, which is less than the weight carried by a modern soldier. The reason why 18th century sailors didn't use it is because by the 18th century, gunpowder had rendered metal armor obsolete.
Similarly, climbing and running would barely be restricted, especially when you consider that the ones wearing the armor in the first place would train for it.
Neither are the plates unwieldy; you'd have full range of motion available to you.
Similarly, climbing and running would barely be restricted, especially when you consider that the ones wearing the armor in the first place would train for it.
Neither are the plates unwieldy; you'd have full range of motion available to you.