1977 37’ C&L trawlers

[Tomtonge]

Just purchased and boat has a lecta san toilet. I can’t find the holding tank! If there isn’t one where was the original tank intstalled? Can anyone help?
Also power is 2 Lehman-ford 80 hp engines. How much oil do they take? Diesel filter p.n.’s ? Any help will be appreciated!
Thanks
Tom

 

[FF]

Those toilets are their own internal holding tank.

They chop up the waste and use blue goo to color the water as it is used to flush .

Sort of like a commercial aircraft setup.

They will need a deck fitting for pump out , or you need to go miles out to sea to overboard discharge , the usual method.

Sadly they all will smell, even with fresh blue goo no stink ..

A better onboard holding system is available, similar, with the waste held below the toilet that doesn't stink.