A business man who owned ships in the early 1800's wrote a letter to Alexander Hamilton about his problem he was having with pirates. He asked Hamilton if the second amendment allows him to put canons on his ships so that his crews could defend themselves. I can not remember the exact response of Hamilton but to put it simply,he wrote that it did allow him!
Taking a slightly different tact but is absolutely pertinant to the discussion of the second amendment is the terminology of that time has to be understood.
In the second amendment, something people like to misinterpret is the term "well regulated militia." The term well regulated meant timely, or quick to respond. Clocks were often referred to as regulators. It had nothing to do with restricting the type of firearm that you owned. In fact if you showed up to volunteer in George Washingtons army and you did not have a firearm with you, he would be blow his head gasket (quite angry!). He complained about it in some of his letters.
Best Regard, Job41