Found this little gem the other day. Stormworks is a physics based vehicle creation and operation game that allows you to complete rescue missions. Looks like the overall goal is to run a coast guard operation. Vehicle creation is pretty cool with the need to hook up control surfaces, propulsion and instruments.
Also apparently the devs are aiming for 4 player COOP which I am looking forward to.
Demo is out now so check it out on steam at: http://store.steampowered.com/app/573090
And if you like it preorder it cheap get it here: https://www.greenmangaming.com/games/stormworks-build-and-rescue/