About 7 million tonnes of granite stones were deposited in the sea, placed at depths ranging from 14 to 20 metres. Construction of the breakwater started in 2016, but major chunk of the structure was completed between 2021 and 2024. Due to unfavorable sea conditions during the monsoon, construction was only possible between October to April each year. In Kollam and Muthalapozhy loading points were planned for collect the larger stones, which were then moved to the breakwater site via barges. A total of twelve barges were deployed for the construction.
