I was under the impression (ie., from school in the '70's), that the zincs protected the steel hull from galvanic corrosion. I don't understand how they would actively protect internal systems. Since they are not active they wouldn't contribute to the EMP coupling issue, but I don't understand how they would protect those systems. Obviously I don't know how your ship works, much more modern than anything I've been on.

The zincs discharge static electricity back into the water to prevent the corrosion. The static electricity accumulates from the water flowing past the hull. This makes the boat a very large Faraday Cage grounded via water rather than a long rod stuck into the ground.

You may have to leave the boat in the event you are boarded.

Grab some electrical wire if you can on the way out. Lots of uses besides being a conductor.

Bottles for Molotov's as a weapon? Fire bombs can be a good deterrent.

Just trying to think outside of the box.

Interesting scenario. I think gear wise, what is available on the boat is more then enough to put together a well rounded GHB bag.

While others have mentioned some good ideas, a few more suggestions would be a good water filter, some decent running style shoes or lightweight trail shoes, a couple of pairs of good quality synthetic sport socks, some food such as freeze dried meals, snack bars etc that the boat may not always have on hand.

As for your route, I went on Google Maps and did some street view driving up around the Hwy 190 bridge and west. That is flat and wide open country. Not my real desired terrain in this type of scenario. And in the near Baton Rouge vicinity I am sure that Hwy 190 would have a lot of other people in the same situation looking for a way home...and probably less prepared then you. This to me is a security concern and I would be looking at a different route to bypass much of the Baton Rouge area....so back to Google Maps and it's street view.

You know the area much better then I do but here is my best armchair attempt at the route I might take:

Hwy 10 (west side of the bridge) west to 76
North 415/76
West on Hwy 76/ Rosedale
North on Hwy 413 to Hwy 190 then west to home.

Total walking distance from the west side of Hwy 10 bridge to Hwy 190 bridge crossing at the Atchafalaya river: 37 miles.

That route suggestion is an option and would sidestep Port Allen greatly. Going up to the Hwy 190 bridge, via the levee is another option. It would depend on what would look best at the time. Westward is the Morganza Spillway Access. It's very flat but does have a decent amount of trees for semi-cover. It's all being used as grazing land for cattle. There are a lot of wildlife in this area.

What's on the boat is what is on the boat. Unusual supply requests will be rejected and questions will be asked that I wouldn't want to answer. In the absence of hard intel prior to an event, it just wouldn't wash.

That southern route (I-49 Corridor) is a safe route but is mostly through swamps. It is elevated over the swamps, but those bridges make for some rough shelter except under the exits. The skeeters are Baaad! Most of the high ground between bridges have sparse tree groupings. Clean water sources would be scarce or non existant. All local water is easily treatable though. The natives are non hostile but not overly friendly to strangers. My Parisian French is not Cajun enough to pass the locals but sufficient to communicate accurately.

I believe following the Levee northward to Hwy 190 is the preferred option but the I-49 Corridor is an option.

Thanks for reminding me to get bug spray if I had to leave!

It just occurred to me that we have a coil of mechanic's wire onboard. I've added that to the list of boat items that can be made use of. We also have plenty of wire ties and bungee cords of different lengths.

carry more cash and a paper list of contact info (Phone numbers, passwords, etc)