So what is the law exactly...are ALL firearms illegal on board a boat? If so...why is it on some pro fishing shows the crew sometimes carries a .22 riffle to finish off the fish rather than bludgeon it with a mallet. If not, what are the conditions? Only riffles and not hand guns...what calibers...Is this strictly a MA law? If so once at sea...where are the boundaries as far as law goes? Inquiring minds, mainly mine want to know...