虾峙门航道是宁波、舟山两港的国际主航道。在虾峙门外有一段长约12千米的航道水深为18.2米,30万吨级的船舶只能减载通过,制约了舟山港宁波港接纳大吨位船舶的能力,限制了舟山港深水岸线的进一步开发利用。如果将虾峙门外航道疏浚至23米,无疑能使舟山港深水岸线的利用效益提升一个档次。这从虾峙门航道的地质条件来看,是完全可能 Shishizimen waterway is Ningbo, Zhoushan two international main channel. At Shishizhimen, there is a section of about 12 km long waterway with a water depth of 18.2 meters. The 300,000-ton class of vessels can only pass the load and restrict the ability of Ningbo Port of Zhoushan Port to accept large-tonnage ships, limiting the deepwater shore of Zhoushan Port Further development and utilization of the line. If we dredging Shoushi outside the channel dredging to 23 meters, will undoubtedly Zhoushan Port deepwater shoreline utilization efficiency to upgrade a grade. This is from Shishizhi doorway geological conditions, it is entirely possible