About 1000 nos. of bored cast in situ piles are installed in marine mode to develop a berthing structure and aligned facilities in Tamil Nadu, India. The berthing structure is located 8 km from the shore, deep water depth of around 18 m and exposed sea wave condition which convoluted the design and construction of pile foundation for the aforesaid structure. The paper covers the assessment of geotechnical data, analysis and design of pile foundation, validation of pile capacity through pile load test, and challenges during construction and their mitigation measures. The subsoil strata consist of a 2–4 m overburdened sand layer followed by weak limestone or sandstone and all the piles are socketed into this weak rock stratum. In addition to the wheel load of ship unloader and service loads, the berthing of a vessel generates a reaction force in the lateral direction that transmits a significant horizontal force on the piles. LPILE software is used to analyze the load–deflection behavior of the pile while taking fixity at the pile head into account. For the design of the pile, future provision dredging is also taken into account. A computed rock socket depth of 4.5 and 4.0 times pile diameter is adopted for berthing and non-berthing face piles, respectively. High-strain dynamic load tests are conducted on the working pile using PDA and field data is processed by the CAPWAP program to evaluate the mobilized capacity of pile. The percussion method of pile boring is adopted to install these piles. The pile penetration ratio (PPR) along with SPT is conducted to identify the rock touch level and pile foundation level after completing the required rock socket depth. The author also highlighted the practical challenges faced during the construction of these piles and the adopted way forwards.