English to Spanish Tech/Engineering Ships, Sailing, Maritime ground chain

Me encuentro con este término en el siguiente contexto:

Mooring chain
We recommend two sections of galvanized chain: a heavier, primary chain and a lighter, secondary chain. The primary (ground) chain lies on the bottom. Its length should be 1-1/2 times maximum water depth. The secondary (riding) chain, is connected to the ground chain with a galvanized shackle or swivel. It's usually half the diameter of the ground chain and equal in length to maximum water depth. The heavier chain is not used for the entire run so that the mooring buoy does not have to support an excessive amount of weight. Chain should be as large as possible—make the riding chain at least double the size of the chain on your anchor rode.

Encontré en un diccionario de términos marítimos "cadena fuerte para asegurar un permanente anclaje", pero no sé si es el término adecuado.

Aguardo su ayuda.

Desde ya, muchas gracias.