Try using an industrial IP65 rated type switch. They are modular, i.e. you can change the actuator switch and the contact block independantly of each other. Something like a Moeller or Square-D would be Ideal. Also the advantage is you can choose any type (rocker, lever, momentary push button, keylock) of actuator switch and any type of base to accompany it i.e. normally open or closed, illuminated etc. Also, depending on what type you go for, you can put three to six different contacts on each switch, very neat and easy to fault find or replace etc. They can be quite dear but shop around. I have used these switches on my RIB since I got it to years ago and despite having spares I have not had to replace any as yet! You will need a bit of roon below the console however as they are around an inch or more deep. Will post a pic of my switchgear later on. If you need more info let me know.
Try this link: (ignore the price RS is very expensive!)