Landlocked.
landlocked
Shore/Shoreline
Beach
bank, beach, cay, coast, embankment, lakefront, oceanfront, riverside, seaboard, seafront, shore, strand.
seashore, beach, float, slide
Possessing
soaring, hovering, glide, sail, coast...
It is called Landlocked! :) Your welcome
unwillingly
Peach is a noun, there is no synonym for it. Just like there is no synonym for water or computer.
Having sex
The synonym for "weather-tight", would be water-proof.