Since about 2014, Cua Dai Beach in Da Nang suffered severe coastal erosion that stripped sand, narrowed swimming zones and hurt tourism. Recent engineering works have turned the beach around, making its recovery a useful case study.

The revival was funded by two government programmes. The Hoi An Coastal Erosion Prevention and Sustainable Protection Project received more than VND 982 billion (about $37.8 million), while Da Nang’s emergency embankment project added over VND 214 billion (about $8.2 million). Together the two programmes invested roughly VND 1.196 trillion, or $46 million, in coastal protection.

Seven submerged breakwaters were placed about 300 m offshore, stretching more than two kilometres parallel to the coast. Their design reduces wave energy and helps keep sand in place.

A stepped concrete seawall now runs along the beach beneath rows of coconut palms. The seawall is backed by protective embankments and a wide promenade that links resorts and local businesses.

After the structures were completed, Cua Dai regained a broad ribbon of sand, drawing tourists back and reviving waterfront shops and services. The project shows how engineered coastal defenses can restore eroded beaches and support local economies.