Breakwaters are specific maritime structures, not used metaphorically for non-physical protection.

Maritime Structures

Breakwaters are often mentioned in the context of bad weather, protecting against stormy seas.

Weather Conditions

Discussions about breakwaters occur in planning and development of coastal areas.

Coastal Development

 and while he was watching his kids playing with toys made from oxen bones called dolosse, he had the idea for this. It's a bit like a huge jumping jack, and they have used this in every harbor in the world as a breakwater. The global shipping economy would not be possible

Toby Shapshak: You don't...

 sustainable fishing and permeable breakwaters when I saw this progression it struck me as a sculptural metal miracle many of these corals survived in El Nino year while the neighboring corals on the natural reefs died or bleached from