https://www.meredithnh.org/sites/g/f...h_2020-u32.pdf
That is the link to the tax map, pay attention to lot #11 which is the one in question. There is a section of that lot that has 350' of water front. My guess is that the associated lots would share that frontage.
It's a big chunk of property.
If I read that plan correctly it looks like the proposed subdivision is 3 lots of record, two which will split the 350" waterfront area the third to be land locked. It doesn't appear to be a 17 lot subdivision plan.