I have just purchased a 2003 Sailfish 282. It is by far the largest boat I have owned as my current one is a 1991 Overnighter 204C. I am sure I will have lots of questions on how the different systems work and ask the forum for insight. My first question is in regards to the attached photo. Were these hose fittings stock or were they installed later. The hoses that come out of the back are not connected to anything and I don't know what they were for. Thanks in advance.