Vessel Density, Monthly Values (timeslider)

For the calculation of the data "AIS Vessel Density", the data of the Universal Shipborne Automatic Identification System (AIS) were evaluated with regard to various parameters and ship types under stochastic aspects. The data are requested once a year for the past year from the European Maritime Safety Agency (EMSA). Among others, the information is collected and stored for the purpose of securing maritime traffic and is used for the manufacture of products produced for navigation by the Federal Maritime and Hydrographic Agency (BSH). The data "AIS Vessel Density" represent the mean spatial density distribution of the ships. The mean spatial ship density is the current number of ships that could be expected in a defined area (grid cell) at any time during a reference period under consideration. The counting distinguishes between five types of vessels: fishing vessels, cargo vessels, tankers, passenger vessels and all vessels. For more information, please visit: https://gdi.bsh.de/en/data/Vessel-Density-Monthly-Values-timeslider_Dokumentation_Schiffsdichte_DE.pdf为计算AIS船舶密度(AIS Vessel Density)数据集，需结合随机分析维度，针对多类参数与船型对通用船载自动识别系统(AIS)的采集数据开展评估。该数据集每年向欧洲海事安全局(EMSA)申请获取上一年度的相关数据。该类信息的采集与存储以保障海上通航安全为核心目标之一，此外还可由德国联邦海事与水文局(BSH)用于航海相关产品的研发制造。 AIS船舶密度数据集表征船舶的平均空间密度分布。船舶平均空间密度指的是，在指定参考时段内，任意时刻某一划定区域（网格单元）中预计存在的船舶数量。本次统计将船舶划分为五类：渔船、货船、油轮、客船以及所有船舶。 如需了解更多信息，请访问：https://gdi.bsh.de/en/data/Vessel-Density-Monthly-Values-timeslider_Dokumentation_Schiffsdichte_DE.pdf