These conditions are very hazardous for shipping.

这些情况对航非常不利。

They were a group of early navigators.

他们是一群早期航。

Life is compared to a voyage.

生好比航。

They logged up the ship's position regularly.

他们定时把船方位记入航志。

The course of a ship is marked on a chart.

轮船航线是标在航图上。

The journey round Cape Horn demanded a high degree of seamanship.

绕好望角航行要求有高超航技术。

The man is a sixteenth Spanish navigator.

那个是十六世纪航。

The navigator charted the course of the ship.

领航员在航图上标出船航线。

He logged the ship's speed at 10 knots.

他在航志之中记下船速每小时十里。

Any of several sea birds, such as the fulmar, albatross, or shearwater.

信天翁--传说中航守护者--已经濒临灭绝了。

Fog is the sailor's deadly enemy.

雾是航者最致命敌。

Simulation results show that the method can meet the real-time requirement in the shiphandling simulator.

仿真结果表明，该方法现星空视景符合航模拟器精度要求和虚拟场景中漫时性要求。

We are only at the beginning of the voyage,and have to learn an entirely new system of seamanship.

我们刚刚踏上航程第一步,还有一个全新航技术要学呢。

Columbus' accomplishment, once accepted, enabled mankind to use the existing skills of seacraft for vastly greater undertakings.

哥伦布业绩一旦被接受，就使类能利用现有航技术从事更伟大事业。

He wasn’t good navigator, so it is necessary that the coastline remain in sight as he moved from one harbor to the next.

他不擅航，所以当他从一码头驶到另一码头时，得一直沿岸线航行。

Sophisticated instruments which were to make possible the European voyages of discovery, such as the astrolabe , the quadrant, and good navigational maps, were also developed by Muslims.

复杂仪器使得欧洲得以进行上探险,例如星盘、象限仪及好航图都是由穆斯林所发明。

The discharge of hold-washings and other residues by vessels carrying noxious or corrosive goods must be conducted in compliance with the state provisions for vessel sewage discharge and shall be truthfully recorded in the logbook.

载运有毒、含腐蚀性货物船舶，排放洗仓水和其他残余物，必须按照国有关船舶污水排放规定进行，并如地记入航志。