导缆孔Chocks
导缆孔又称“舷墙缆孔”，是设于舷墙上，用于限制缆绳导出位置的闭孔状导缆器，为一圆形或椭圆形的环形铸件。导缆孔通常由铸铁或铸钢制成，安装在舷墙上，引导缆索穿过船体，并可防止缆索损坏船体。
Cable guide hole, also known as "bulwark cable hole", is a closed-hole cable guide located on the bulkhead to restrict the position of the cable to be exported. It is a circular or elliptical ring casting. Cable holes, usually made of cast iron or cast steel, are installed on the bulkhead to guide the cable through the hull and prevent damage to the hull.