Well,since I was in theCoast Guard in both Alaska and the Oregon coast I may be of help.Shipboard weaponry have the following uses;repelling pirates who kill the owners and either plunder,scuttle or use the vessel for drug running,as a line throwing or marine pinniped hunting weapon and finally as a onshore self Defence or hunting weapon.Id check with the U.S. and Canadian Coast Guard on known incidences of piracy.The old H&R firearms company used to sell a splendid Martini actioned harpoon rifle.Id think twice before trying one on a large sea lion though!However with modified projectile heads it is an adequate line throwing unit.If you are shipwrecked in those waters and make it to shore your best bet would be to hunker down,build a fire and hope your emergency beacon is working.Shellfish,birds,seaweed and a plethora of goodies are there for the eating(some shellfish is poisonous seasonally).I consider Bears a minimum threat.Your big danger in those waters is getting rammed by one of the huge oiler or freight cargo vessels! I was almost sunk in Francisco bay in the fog.If I had to choose one firearm(excluding a flare pistol which I hope you have);an old SMLE Enfield would get the nod.It holds ten rounds,has extreme rapid fire capabilities(Germans in WW1 often thought a rifle company was a machinegun),can be loaded in a 210grain big game load,takes abuse and has a ugly finnish for foul weather.Some are being rebuild from parts and some are plain tired.If you have any friends in the hobby pick therir brains for help.In all honesty in those waters Id have a survival suit,state of the art liferaft and my electronics first priority,A firm float plan posted with more than one port of call(and do call,they don't miss you if they don't know about you).<br><br>