Marine related projects have long been an area of specialist activity and RSAL has considerable experience in the design and planning of marine contracts – from multimillion riyal container terminals to sea defenses. RSAL undertook the construction of Saudi ARAMCO's largest marine structure, the Juaymah LPG Trestle. This 10 kilometer long trestle is built on 66 inch concrete cylinder piles extending to water depths of 40 meters. RSAL mobilized more than 3000 men on the project having value of Saudi Riyals 840 Million.

RSAL specializes in technically challenging civil work projects such as installation of large diameter GRP seawater laterals and associated sluice gates and flow meters. The Company is heavily involved in projects involving water and wastewater management.