.. You might want to reconsider taking a firearm with you. Reality is that it will be seized in the vast majority places you're likely to visit, and if not creates a major paperwork Headache. And will in all probability, trigger a very, very through search of your vessel, by the authorities. .... As to Security, a little prudence would go a long way. Route Planning to avoid risky transits, and if transiting dubious areas, sailing in Convoy offers a measure of security IE Safety in numbers. Anchorages are another issue, and there one should anchor in designated areas ( where applicable) and again safety in numbers. Perhaps supplemented by a Motion Detector Alarm. ... In a Marine Environment, maintenance, even of Stainless Steel Firearm's is an ongoing battle, and that's before you consider the ammunition. With managing the day to day tasks, plus navigation etc. there is little time to lavish on cleaning and oiling a firearm thats of debatable value. ...... If your bound and determined to carry a Firearm, then a shotgun is not a bad choice, oil/grease and store in a DRY LOCKER, that's secure and can be turned into a Bond Locker, with desiccant bags. .... Anyway, just my two cents worth, and no doubt many would disagree. ...... David K