TY - Journal of Yangtze River Scientific Research Institute A1 - LIU Xiao-Ping, FAN Ning-Yang, QIAN Dong-Yue, LI Fan- T1 - Measures of Improving the Direct Navigation Accuracy of Ship Model Test Y1 - 2012-07-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 50 EP - 52 VL - 29 IS - 7 UR - http://ckyyb.crsri.cn N1 - 10.3969/j.issn.1001-5485.2012.07.011 ER -