Construction works of a boat maintenance yard and a pier, with a total of 465 m of dock length and 200 yachts of capacity, have been accomplished for the General Directorate of Railway, Harbor and Airport Constructions next to the marina of Marmaris for touristic and maintenance purposes. An approximate amount of 65.000 tons of sea backfilling in various categories; 4.000 m³ concrete pouring for field, crown and underwater in various dosages; spiral welded steel piling of 3.500 m of length and 300 mm of diameter for the 265 m long pier and dock have been accomplished for the project.