A band or collar on the top end of a boom which the topping lift, midships guy, and outboard guys are secured, is called the().
A、collar band
B、guy band
C、pad eye collar
D、spider band
A、collar band
B、guy band
C、pad eye collar
D、spider band
A、Brown conical tower with white horizontal band in center of light on black pier B、Red conical tower on brown cylindrical pier C、White octagonal house on brown cylindrical pier D、White conical tower,with brown band midway of height
A、is primarily designed for vessels operating up to 50 miles offshore or on foreign waters B、transmits a signal that can be detected by satellite C、must be manually activated D、operates in the medium and low frequency bands