Cleaning the Torpedo Tubes.....
IF you are serious about opening a tube and putting it on display for the world to see you have a good bit of work that has to be done before you can get to that point especially if you have scaling/corrosion/green nasty stuff and yes a good bit of cosmoline in your rollers.
Where to start??
1. Is the tube going to be open for display which means you will need to light the tube.. Remember the tubes forward are 21' long and 21.125" in Diameter so that is a pretty descent distance that you have to light which means that white christmas lights don't work too well
2. Are you going to be loading a weapon into the tube for display? because if you are that makes life simple because the only thing you really have to do is clean the Breach Door (Bronze btw) and then get your rollers to work some what. And make sure that the stop bolt is in the load position and that your depth/course setting mechanism is not extended into the tubes.
So assuming that you are going to open a tube up for display and you are going to light it so that the tourist's can see all the way to the end where do you start.... The first place is at the Breach Door (AGAIN it is made of BRONZE) so you need to take care when cleaning it, a wire wheel on a drill works well but you need to be carefull not to burn anything into it due to the heat of grinding on it.
Once the Breach Door is clean and you are happy with it seal it with some petrolium jelly/grease.. The next step is to make sure that the vent valve is OPEN and you can put some air into the tube while you have a person in inside cleaning.... Make sure that when your person is cleaning the tube that they have a mask/resporator on while they are cleaning the tube because you may have to take the wire wheel/tooth brush inside the tube to clean the corrosion/barnacles/other debris off of the inside of the tube. And of course they need to have a good light with them when cleaning the tube for the first time, once your tubes are clean the process becomes relatively easy after that and requires less labor/maintenance.
IF you are able to use a pressure washer on the Batfish/whatever boat, something to remember is can you remove the water from the bilges?? because it may be easier to use a pressure washer to break the crud loose then going into the tubes with a wire wheel and grinding for a few hours. Make sure that IF you are using a pressure washer you have the angle on the boat so that the water WILL drain to the drain valve, this will ease in removing all the water/debris in the tubes as you go.
Once the decision is made about a pressure washer or a wire wheel you will need to start cleaning at the MUZZLE Door and work your way back to the Breach Door.. The reason behind this is that when you clean your tubes you want to be able to bring all of your trash/debris to the Breach door so it can be swept into a bucket or whatever you have.
Regardless which way you go it is going to be a few long days for the TM Division in regards to bringing the tube back to being presentable once more.
Again here is the link to the Torpedo Tubes section of the Fleet Submarine Manual...
http://www.hnsa.org/doc/fleetsub/tubes/index.htm