1997 400 Sundancer with 3116 Cats. Was driving the boat yesterday when I started loosing RPMs and speed. My passengers were yelling I had smoke coming out the back. I look and there is white and black smoke. Shut both engines down, open the engine hatch and white smoke is billowing out, looks like the whole engine room is on fire. After a few minutes the smoke clears out and I can see anti-freeze sprayed over both engines. On the port engine the small clear hose from the radiator tank to the reservoir has 2 large holes (pic1 & pic2) and the reservoir is full to the top (pic3) normally it is half full. I was able to limp home on the starboard engine with no other problems. My question: could the blown hose have caused all of this by itself, or is there some other issue with the engine that could have caused the hose to blow out? Was the white smoke just steam from the anti-freeze hitting the hot engines (pic4)? I know the black smoke was caused by the drop in RPMs and unburned fuel coming out the exhaust? Thanks for any help.