Which structure is designed to protect harbor entrances by dissipating approaching waves?

Which structure is designed to protect harbor entrances by dissipating approaching waves?

• A. Coast
• B. Breakwater
• C. Berm Crest
• D. Beach

Answer: (B)

A breakwater is built to interrupt and dissipate wave energy before it reaches the harbor mouth, creating calmer waters inside the harbor for safer docking and reducing erosion at the entrance. By forcing waves to break and spread their energy along the structure, the height and power of waves that reach the harbor are significantly reduced. The other terms refer to natural shoreline features rather than engineered barriers: a coast is the broad shoreline, a berm crest is a raised ridge on a beach, and a beach is the sandy shore itself. These do not serve the specific purpose of protecting harbor entrances by dissipating approaching waves.

A breakwater is built to interrupt and dissipate wave energy before it reaches the harbor mouth, creating calmer waters inside the harbor for safer docking and reducing erosion at the entrance. By forcing waves to break and spread their energy along the structure, the height and power of waves that reach the harbor are significantly reduced. The other terms refer to natural shoreline features rather than engineered barriers: a coast is the broad shoreline, a berm crest is a raised ridge on a beach, and a beach is the sandy shore itself. These do not serve the specific purpose of protecting harbor entrances by dissipating approaching waves.