mooring pile in a sentence

1. All the electrical cables, water and sewage flow through flexible pipes inside the mooring piles.
2. Initially repair work was expected to take up to 18 months, but a survey by engineers showed that the timber access boardwalk, concrete waiting area and steel roof were intact, along with the mooring piles.
3. The floating pontoon was full of water ( due to overtopping into the access hatches on the deck ), but was still connected to the mooring piles down on the river bed, and was recovered and refloated.
4. It's difficult to find mooring pile in a sentence.