一、前言 乳山东湾从东乳山至锚葫咀一线以东海域,大约位于121°29′-121°37′E,36°47′-36°51′N的范围内(图1)。湾口与乳山西湾相接,其西湾外与黄海相接。乳山东湾外即西湾主航道南侧,先顶山西北角有一礁石(称为取脚石)阻挡。乳山西湾东南侧有一片沙港呈“┙”形阻挡。西湾口内水深最深处可达15米,而湾口外水深度变浅,可达5-6米。因此, I. INTRODUCTION The Rushan Bay from East Rushan to the east coastline of Anchor Curtain is located in the range of 121 ° 29’-121 ° 37’E and 36 ° 47’-36 ° 51’N (Figure 1). Bayou and Rushan West Bay phase, the West Bay and the Yellow Sea phase. Outside the Rushan East Bay, on the south side of the main course of the West Bay, there is a rock at the northwestern corner of Xianding (known as a stepping stone). There is a sand port in the southeastern part of Rushan Bay in the shape of a ┙-shaped block. The deepest depth of the West Bay mouth up to 15 meters, while the shallow water depth of the mouth, up to 5-6 meters. therefore,