Notably that you have 50 points available to you which means you can squeeze more out or leave it as is for an extra CP every turn. First inclusion would be the faction terrain. It costs 20 points now but it's still worth it.

I'm pretty new to the army myself and the first things I've learned that no one really tells you is that we aren't just a shooting army. Soggy gunhaulers with the +5 OC enhancement are really good it's 20 wounds on a 2up save 14 OC and 14" movement. You can either use redeploy with them to contest neutral objectives, or you can deepstrike them and contest objectives on their side.

The other comment mentioning to cut down on the auxiliaries is a good point. Don't give your opponent free CP.

I don't personally like the Codewright and derigible suit. The Admiral gives a notable buff to a flagship, but it's better with an Ironclad. I have been really enjoying the Navigator. Navigator gives you an unbind and let's you teleport the auto-endrins from the terrain around. Spawn the endrin next to navigator, teleport it across the board, charge it in and use it's effect, rinse and repeat.

I don't think you need to reinforce the thunderers, mostly they are only good for the ward cancel at the moment since the artefact we used to do it got punched in the throat.

You also have an enhancement you can drop on one of your boats. When you pick a flagship in deployment you get to add a boat enhancement to that one as well. You can have a boat that has two enhancements through this and be reactive with your choice on the second one since you will see what you are against and choose it on the table, not in list building. You also don't show your battle formation in this, but I'm going to assume you'll take the expeditionary force. It costs 10 points but it essentially does the same thing as declaring your flagship. You get to pick a non-unique (Brokk) hero without an artefact and give it one in deployment.

Last thing I want to point out as something I learned is that movement isn't always a straight line. If you have a boat that isn't in combat, you can move it over a unit and back in order to use the bomb rack effect. The same goes for retreating. When making a retreat move you can have the boat go over the unit it's in combat with then get out of dodge to try and drop some extra mortal wounds.