The first lighthouse was put up by the Massachusetts Bay Colony in 1716 on Little Brewster Island at the entrance to Boston Harbor. Paid for and maintained by "light dues" levied (征收) on ships, the original beacon was blown up in 1776. Until then there were only a dozen or so true...
The first navigational lights in the New World were probably lanterns hung at harbor entrances. The first lighthouse was put up by Massachusetts Bay Colony in 1716 on Little Brewster Island at the entrance to Boston Harbor. Paid for and maintained by “light dues” levied on ships, the origin...
Light signalsNavigation lightsNavigational aidsShip simulatorsWhen ships sailed at night through the Kanmon Passage in Japan, it was difficult for navigators ... M Numano - 《Ship Simulators》 被引量: 2发表: 1996年 Lighthouses - past and future Around the coasts of the United Kingdom and Ire...
If the observer sees the red port or green starboard navigation lights of the other vessel, the course limits can be read off the appropriate sector. An 80 deg. additional sector (11) on another disc is provided for setting the wind direction in the case of sailing ships. 展开 ...
If the observer sees the red port or green starboard navigation lights of the other vessel, the course limits can be read off the appropriate sector. An 80 deg. additional sector (11) on another disc is provided for setting the wind direction in the case of sailing ships.MORALES,HONORIO...
网络释义 1. 航行设备 vocabulary... ... navigational bridge 驾驶台navigational equipment导航设备;航行设备navigational escort 航行护航 ... rwhdavid.bokee.com|基于15个网页 2. 导航设备 vocabulary... ... navigational bridge 驾驶台navigational equipment导航设备;航行设备 navigational escort 航行护航 ... ...
With more than 40,000 commercial transport ships and thousands more naval, cruise, and private ships at sea every day – a large percentage moving in, out, and around U.S. coastal and inner waterways – these systems help keep them from grounding, prevent collisions, assist emergency response...
presence and movement of ships in sight or known to be in the vicinity; (iv) conditions and hazards likely to be encountered during his watch; (v) possible effects of heel, trim, water density and squat∗ on underkeel clearance. 8. If at any time the officer of the watch is to be...
The first lighthouse was put up by the Massachusetts Bay Colony in 1716 on Little Brewster Island at the entrance to Boston Harbor. Paid for and maintained by "light dues" levied (征收) on ships, the original beacon was blown up in 1776. Until then there were only a dozen or so true...
The first navigational lights in the New World were probably lanterns hung at harbor entrances. The first lighthouse was put up by the Massachusetts Bay Colony in 1716 on Little Brewster Island at the entrance to Boston Harbor. Paid for and maintained by "light dues" levied (征收) on ships...