第1章船舶结构和驾驶台设备

Chapter 1 the Ship’s

Structure and Bridge

Equipments

Ship’s Structure

The foremost part i s called the bow and the rearmost part i s called stern. When standing in a ship and facing the bow，the left-hand side is called port side and the right-hand side i s called the starboard side.

All permanent housing above the main deck is known as superstructure. At the fore end is the forecastle. At the after end is the poop.

The main part of a ship is the hull. This is the area between the main decks，the sides and the bottom. It is made up of frames covered with plating. The hull is divided up into a number of watertight compartments by decks and bulkheads. Bulkheads are vertical steel walls going across the ship and along. Decks divide the hull horizontally. Those dividing up cargo spaces are known as tween-decks. The hull contains the engine room，cargo space and a number of tanks. In dry cargo ships the cargo space is divided into holds，in liquid cargo ships it i s divided into tanks. At the fore end of the hull are the fore-peak tanks and at the after end the after peak tanks. They are used for fresh water and water ballast. The space between the holds and the bottom of the hull contains double bottom tanks. These are used for ballast water and fuel.

第1章船舶结构和

驾驶台设备

船舶结构

船舶最前部分称为船首，最后部分称为船尾。面向船首站在船上，左手一侧称为左舷，右手一侧称为右舷。

主甲板以上的所有永久性结构称为上层建筑。在前端是艏楼。在后部是艉楼。

船舶的主要部分是船体。这是主甲板、翼板和船底围成的区域。它是由覆盖有船壳板的肋骨构成的。船体由甲板和舱壁分成许多水密分舱。舱壁是纵横竖直钢质围壁。甲板水平分隔船体。划分货物空间的甲板称为二层甲板。船体包括机舱、货物舱位和一些液体舱。在干货船上，货物舱位被分成货舱，在液货船上货物舱位被分成液货舱。在船体的首端是艏尖舱，尾端是艉尖舱。它们是用于装淡水和压载水的。船体的货舱和船体之间的空间是双层底。它们是用于装压载水和燃料的。

(be made up of…由……构成)

(watertight compartment 水密分舱)

(the fore-peak tank 艏尖舱)

(the after peak tank 艉尖舱)

(double bottom tank 双层底舱)

The main deck covers the cargo spaces or holds. There are openings cut in the deck，and these openings are the hatches，one to each

主甲板覆盖货舱。甲板上有一些开口，这些开口是舱口，一个货舱一个舱口。船舶使用起重机或吊杆将货物吊入舱内或卸出。

hold. Ships use either cranes or derricks to lift the cargo into the hold and di scharge it. A derrick is simply a strong boom，made of steel or wood，that can swing from side to si de. A wire from a powerful winch runs over a block at the head of the derrick. It’s quite a simple arrangement. A crane i s usually a much more complicated and expensive piece of lifting machinery. But a lot of ships are fitted with cranes.

The forecastle on a ship is a small extra deck above the main deck，forward of number one hold，right up in the bows. It carries the anchors and their cables. The windlass is for raising and lowering the anchors. There are the port and starboard cable stoppers on the forecastle. The cable comes up from the cable locker through the spurling pipe，over the gypsy on the windlass，through the stopper and down through the hawse-pipe. Right forward of the forecastle is the jackstaff.

The forecastle head is where the chief officer is stationed when the vessel is coming to a berth or a mooring. The second officer is on the poop，ready to look after the stern mooring lines or hawsers. In this way，the two ends of the ship can be secured as preci sel y and quickly as possible. There is an ensign staff right aft of the poop.

There are two open wings of the bridge. They project out to the full width of the ship on each side，port and starboard. In between is the wheelhouse；that’s enclosed for protection from the weather. And above the wheelhouse is the standard compass platform，one good magnetic compass is put there as far as possible from the ship’s magnetic field. And that’s the 吊杆是由钢铁或木材制作的简单坚固的起重杆，并能从一舷旋转到另一舷。连接强力绞车的钢丝缆经过一个滑轮连接在吊杆头上。吊杆是一种简单的装置。起重机通常是更复杂和昂贵的起重机械。但是，许多船舶装备起重机。

(hatch 舱口)

(hold 货舱)

(boom 吊杆，悬臂)

船舶上的首楼是高出主甲板的一块小的额外甲板，位于1号舱前部，在船首的正上方。艏楼上载有锚和锚链。起锚机用于起锚和抛锚。艏楼上有左右制链器。锚链从锚链舱出来经过锚链管，绕过锚机滚筒，通过制链器再向下到锚链筒。艏楼最前端是船首旗杆。

(cable stopper 制链器)

(cable locker 锚链舱)

(spurling pipe 锚链管)

(gypsy 锚机滚筒)

(hawse-pipe 锚链筒)

当船舶靠泊或系泊时，艏楼是大副值班的位置。二副是在艉楼值班，做好照料船尾系缆或艉缆。这样，船舶的两头的安全就能得到尽可能快和准确的保证。艉楼的最后端有船尾旗杆。

(ensign staff 船尾旗杆)

驾驶台有敞开的两翼。该两翼向两侧，即向左右舷突出船体整个宽度。两翼中间是操舵室；操舵室是封闭的以防止天气的影响。操舵室正上方是标准罗经平台。在这里放置一部性能好的磁罗经，并且尽可能远离船舶磁场。这部罗经被称为标准罗经。标准罗经被认为具有比主操舵罗经小得多的自差。但实际上，我们是一直使用陀螺罗经的。

compass they call the “standard”.The standard compass is supposed to have quite a lot less deviation error than the main steering compass.

B ut actually we use a gyrocompass nearly all the time.

There are several pairs of mooring bitts and fairlead fitted with rollers along the deck for wires and warps. The roller fairleads can cut down chafe and friction，so the owners are glad to reduce wear and tear，by using roller fairleads all over the place.

A traditional general cargo ship has her engine room and bridge superstructure amidships. She may have three holds forward of the bridge and two holds aft of the bridge. Derricks are supported by masts and samson posts. They are sowed fore and aft when the ship is at sea. There are enough lifeboats，on the port and starboard si de amidships.

A ship is made fast to the quayside by mooring lines. The standard mooring lines consi st of headline，forward breast line and forward spring line and stern line，aft breast line and aft spring line. Any of these lines may be doubled. Each line has a large eye spliced in the end. The eye is placed over a bollard on the quayside. If there i s another line already on the bollard，the eye of the second line shoul d be taken up through the eye of the first line before placing it over the bollard. Thi s makes it possible for either line to be let go first.

Bridge Equipment

As soon as possible after joining a ship and before taking over the first watch，a watch

沿着甲板有几对系缆桩和带滚轮的导缆器供系缆和拖缆通过。滚轮导缆器能够减少摩擦损坏；船东很高兴普遍采用滚轮导缆器来减少磨损。

(mooring bitt 系缆桩)

(fairlead 导缆器)

(roller fairlead 滚轮导缆器)

(wear and tear 磨损)

(all over the place 到处，各处，满地)

传统的杂货船的机舱和驾驶台上层建筑在船中。驾驶台前有三个货舱，驾驶台后有两个货舱。吊杆是由大桅和将军柱支撑的。船舶在海上航行时，吊杆是沿艏艉方向停放的。在左右舷和船中有足够的救生艇。

船舶是靠系缆靠泊在码头上的。通常系缆是由艏缆、前横缆、前倒缆和艉缆、后横缆和后倒缆组成的。任何一根缆可以是双缆的。每一根缆的末端插接一个大的眼环。眼环是套在码头系缆桩上的。如果系缆桩上已经有一根缆了，第二根缆的眼环应当从第一根缆的眼环中穿过再套在系缆桩上。这样可以使任何一根缆先解掉。

(bollard 缆桩)

(consi st of 由……组成)

(be let go 解掉)

驾驶台设备

值班驾驶员一到船在接第一班前，必须熟悉所有驾驶台和相关的海图室设备及其用

officer must become familiar with all bridge and associated chart room equipment，its use，operati on，capacity，and limitations. Instructions and manual s i ssued wi th the equipment must be studied and cl osely foll owed. Since model s of bridge equipment vary wi th the manufacture，there are a variety of different operational procedures.

The bridge equipment includes：radar；magnetic compass；gyro compass；the radio direction finder；echo sounder；GPS and DGPS；steering gear and the automatic pilot；GMDSS equipments；VHF etc.

1. Radar

Radar (Radio Direction And Ranging) i s a method to determine distance and direction of objects by sending out a beam of microwave radio energy and detecting the returned reflections. The OOW must keep in mind that radar is more accurate as a ranging device than as a bearing device. Radar is a tremendous advantage both as a navigation aid and as an anticollision device. It can be used in all conditions of visibility，but is particularly useful in poor vi sibility and at night. Fixes can be obtained rapidly and anticollision solutions can provide tremendous peace of mind to the OOW. Radar can also be used to locate and track squall lines and other heavy weather. In avoiding collisions the importance of visual beari ngs cannot be overstressed. V isual bearings and radar ranges provide the best early assessment of the possibility of a threat to a vessel. One radar must be on for early detection. A second radar should be on at a close range scale. Range scales must be appropriate for the circumstances. When a pilot is embarked it is important for the OOW to 法、操作、性能和局限性。必须学习设备的使用说明书和操作手册并严格遵守。驾驶台设备的型号因厂家不同而不同，故操作程序差别很大。

(take over 接班)

驾驶台设备包括：雷达，磁罗经，陀螺罗经，无线电测向仪，回声测深仪，GPS和差分GPS接收机，舵机和自动操舵仪，GMDSS ，VHF等。

1．雷达

雷达(无线电测向和测距)是通过发射微波无线电能波束再测定反射回波的方法确定物标的方向和距离的方法。值班驾驶员必须记住雷达测距离比测方位更准确。雷达作为导航设备和避碰装置都有很大的优点。它可以在任何能见度情况下使用，尤其适合能见度不良和夜间使用。值班驾驶员利用雷达可以很快获得船位，避碰解算可以使驾驶员心情平静。雷达也可以用来定位和跟踪航线和恶劣天气。避碰时，不能过分依赖目测方位。目测方位和雷达距离能够提供最好的威胁船舶的危险的早期判断。一部雷达必须设置在早期警告(远距离挡)，第二部雷达应当设置在近距离挡。距离标尺必须适合当时环境。当引航员在船时，对值班驾驶员重要的一点是保证一部雷达供引航员使用另一部雷达供船长和驾驶员使用。值班驾驶员必须知道由于船舶上层建筑造成阴影扇形的可能性。改变航向可以显露出雷达探测的这个扇形区。

(keep in mind 谨记)

(peace of mind 心情平静)

(shadow sector 阴影扇形)

(squall line 飑线(一条狭窄地带，雷阵雨区没有锋线))

ensure that one radar i s available for the pilot and the other is available for the master/OOW. The OOW must be aware of the possibility of shadow sectors due to the ship’s superstructure.

A change of course can unveil these areas for radar detection.

No matter how good a radar is，its value as an aid will be entirely dependent upon the person who operate it. The OOW must be fully conversant with the radar’s capabilities and limitations in order to understand and interpret the radar picture correctly. It is important to carry out radar practice in clear weather whenever possible in order to obtain the confidence and routine that is necessary for proper use of radar in restricted vi sibility. Information obtained from the radar must be used so that early steps can be taken to prevent any ri sk of collisi on from arisi ng. The use of radar does not under any circum stance reli eve the navigator of the obligati on to maneuver i n a seamanlike manner accordi ng to the provi si ons of Rules.

As radar become more automated，it will be even more important for watch officers to keep abreast by continuing education and experience in professional practice.

2. GPS and DGPS

A global navigation satellite system is a satellite system that provides ships fitted with suitable receivers with a means of obtai ni ng continuous worldwide position，time and speed information. The Global Positioning System (GPS) or Navstar operated by the United States and the Global Navigation Satellite System (GLONASS) operated by the Russian Federation are currently available for civilian use on ships. GPS offers commercial users a

(appropriate for 适于，合乎)

(be aware of 知道)

(unveil 显露出)

无论雷达性能如何好，作为助航仪器的价值完全取决于操纵雷达的人。为了正确理解和解释雷达影像，值班驾驶员必须熟悉雷达性能和局限性。为了取得信心和在能见度不良时正确使用雷达的程序，只要可能就要在晴天进行雷达实践。

(no matter how 不管如何)

(OOW（officer on watch）值班驾驶员)

从雷达获取的信息必须使用，以便能提早采取措施防止出现的碰撞危险。在任何情况下，雷达的使用不能解除航海者根据航路规则按照海员方式操纵船舶的责任。

雷达变得更自动化，对值班驾驶员更重要的是在专业实践中不断地培训和实践。

2．GPS和差分GPS

导航星全球定位系统是向配备有适合接收机的船舶提供连续性全球性位置、时间和速度信息的卫星系统。由美国操纵的GPS或Navstar 和由俄罗斯操纵的GLONASS 目前正在被民用船舶使用。GPS 向商业用户提供全球定位精度为100米。差分GPS 接收机对接收的GPS信号施加改正，然后由陆上监测台发射。差分信号可以经卫星或高频无线电线路发送给船舶。在差分GPS覆盖区内，在接收机天线处定位精度可达10米。

global positioning capability with accuracy of the order of 100 metres. Differential GPS (DGPS) receivers apply corrections to raw GPS signals determined and transmitted by terrestrial monitoring stations. Differential signals can be transmitted to ships via satellites or using HF radio links. Within DGPS coverage，positional accuracy of the order of 10 metres at the receiver antenna is possible.

3. E cho Sounder (Fathometer)

This instrument produces an underwater sound pulse and measures the elapsed time until return of an echo which i s received by a microphone. The depth，in feet，meters，or fathoms，is interpreted according to an equation( depth = speed ×1/2 time interval between sound pulse and echo) and then displayed on an indicator. Displays include rotary flashing light，electrical meter，digital readout，or bottom profile. Whatever the display，it is essential that the OOW be certain what unit of measure and range is being used. This instrument should be used whenever the ship navigate in waters where the depths make it serviceable and where the safe navigation of the ship requires it.

Where the ship carries a depth recorder with an alarm，the echo sounder should be used when navigating in narrow waters and in all other circumstances where the depth of water makes it a useful aid that may increase the safe navigation of the ship.

The echo sounder is not used to its maximum capability aboard the bridges of most merchant vessels. It can be very useful in an approach to port or when making a landfall where there are di stinct depth contours，such as the 100-fathom curve，that can give an OOW 3．回声测深仪

该仪器发射水下声脉冲并测量由一个传声器接收的回波的时间。以英尺、米或拓为单位的水深可以根据公式得出(水深= 声速×1/2(发出声波到收到回波时间))，然后显示在一个显示器上。显示器包括旋转闪烁灯、电表、数字读数计或剖面测量仪。无论哪种显示器，值班驾驶员应当明确使用的测量单位和量程。每当船舶航行在水深是有用的水域和安全航行需要水深时应当使用该仪器。

(elapsed time 共用……时(间))

对有报警深度记录仪的船舶，当航行在浅水区时和水深对增加船舶安全航行是有帮助的所有其他情况时，应当使用回声测深仪。

回声测深仪在商船上没有应用到其最大性能。当驶入港口或接近等深线明显的陆岸，如100拓等深线，回声测深仪是非常有用的，它能给值班驾驶员提供一条很好的位置线。该位置线可以与天文位置线、目测方位线和雷达距离一起使用获得一个很好的定位。此

an excellent line of position (LOP). This LOP can be utilized with a celestial LOP，visual bearing，and/or radar range to provi de an excellent fix. In addition，a line of soundings may be used as a aid in determining a vess el’s position.

A precaution in taking soundings：these depths on charts are uncorrected for any variation in salinity，density，or temperature. In addition，the quality of the bottom may indicate a different depth than on the chart. When comparing soundings from the chart with the fathometer，allowance for the height of the tide and the draft of the ship.

A similar device is the sonar system，which uses high frequency sound signal s. In sonar the sound signal can be sent ahead or sideways. The time for the echo to be sent back from an object，such as an underwater rock，is a measure of the object’s di stance from the ship. The sonar system can also be used to measure the speed of the ship over the seabed.

4. Radio Direction Finding (RDF)

Radio directi on findi ng (RDF) systems operate in the upper part of medi um frequency(MF) band and the l ower part of the hi gh-frequency (HF) band. Shoresi de non-directional transmitters and shi pboard receivers with directi on-sensi ti ve antennas all ow radio beari ngs to be plotted directl y on a chart. Si nce radio waves travel great circles，a correction to the bearing is not necessary if the range i s less than 50 miles. A correction，if necessary on a Mercator chart，can be found in formula or graphs.

Manual RDF receivers are rotated by hand until the minimum signal (null) of a desired frequency i s obtained. A “sense”antenna is used to resolve the ambiguity of a possi ble 180°外，一条测深线可以用来判定船舶位置。

(line of position (LOP) 位置线)

测深时应注意：海图上的水深没有经过盐度、密度或温度的改正。此外，底质可能指示与海图水深不同的水深。当比较测深仪水深与海图水深时，应当改正潮高和船舶吃水。

一个类似的装置是使用高频声波的声呐系统。声呐系统，声波信号可以向船首或船舶两侧发射。从物标，如水下礁石，反射回来的回波的时间是船舶到物标距离的度量。声呐系统也可以被用于测量船舶相对海底的速度。

4.无线电测向仪(RDF)

无线电测向系统是工作在中频段(MF)的较高频谱部分和高频段的较低频谱部分。岸上全方向发射机和船舶上带有方向敏感天线的接收机可以使得无线电方位直接标绘在海图上。由于无线电波是沿大圆传播的，如果距离小于50海里，可以不必进行无线电方位修正。如果必须进行改正后才能在墨卡托海图上标绘，可以用公式或改正量曲线求得改正量。

手动无线电测向接收机是用手转动控制按钮直至接收到要测频率信号的最弱信号(哑点)位置。采用定边天线解决可能的180°不确定性误差。

error.

Automatic receivers correct for thi s 180°ambiguity as these direction finders rotate a loop either electronically or mechanically. The OOW must ensure the station is matched with the correct frequency.

5. VHF

VHF operate in very high frequency (VHF) band(30 ~ 300 MHz). The two most used frequencies can be found on channel 16(156.8 MHz)，international distress，and on channel 13(156.65 MHz)，shi p-to-shi p or bri dge-to-bri dge. They are basically line-of-sight frequencies that are limited by the curvature of the earth and the heights of the respective antennae.

Officers of the watch must be familiar with VHF procedures and get used to talking on the radio with brevity and clarity. It is a tremendous anticollision device which can give peace of mind to the officers of the watch on vessel s that are approachi ng each other. Masters should encourage OOWs，and even cadets，to use VHF in contacti ng pil ot services and arrangi ng for pilot embarkati on.

In communicating by voice with other vessel s uncertainties can arise over the identification of vessels and the interpretation of messages received. At night，in restricted visibility，or when there are more than two vessel s in the vicinity the need for positive identification of the two vessel s i s essential but thi s can rarely be guaranteed. Even where positive identification has been achieved there is still the possi bi l i ty of a mi sundersta ndi ng between the parties concerned due to language difficulties-however fluent they are in the

(the minimum signal (null) 最弱信号(哑点)位置)

(“sense” antenna 定边天线)

自动测向接收机是用电子或机械方式改正180°不确定性误差的。值班驾驶员必须保证调谐到要接收台的正确频率。

5．甚高频无线电话

甚高频无线电话工作在甚高频((30 ~ 300 MHz)频段。两个最常用的频率是国际遇险通信16频道(156.8 MHz)和船舶对船舶或驾驶台对驾驶台通信13频道(156.65 MHz)。它们基本是视线频率，受地球曲率和接收机天线高度限制。

值班驾驶员必须熟悉VHF 程序并习惯简短而清楚的无线电通话。VHF是一个非常好的避碰装置。当船舶互相驶近时，它能使值班驾驶员心情平静。船长应当鼓励值班驾驶员，甚至普通船员在与引航员联系和安排引航员登船时使用VHF。

在与他船进行语言通信时，在船舶识别和接收到的信文的理解方面可能出现不确定情况。在夜间，能见度不良或附近有两艘以上的船舶时，正确识别这两艘船是必要的，但是，这一点很少能保证做到。即使做到了正确识别，通信双方可能由于语言困难，无论他们使用的语言如何流畅仍然存在误解。不准确或含糊的表达的信文能产生严重的后果。

language being used. An imprecise，or ambiguously expressed，message can have serious consequences.

6. Compasses

Magnetic compasses：The magnetic compass is generally fitted above the bridge on the centerline with a periscope so that the compass is readable from the helmsman’s position. The deviation of the compasses should be determined after each alteration of course and when a steady course i s being steered，at least once on every watch. The result of the determination should be entered in the ship’s log book as well as the deviation book. A compass deviation card should be maintained and posted on the bridge.

Gyro compass：It is recommended that the gyro compass should be run continuously. Should a gyro compass stop for any reason，it should be restarted and subsequently checked before use to ensure it has settled and is reading correctly. Speed and latitude corrections need to be applied to the gyro compass. The gyro will support a number of repeaters，including a repeater at the emergency steering position. Gyro repeaters on the bridge should be checked against the main gyro at least once a watch，and after excessive manoeuvring. Other repeaters should be checked frequently. Magnetic and gyro compass errors should be checked and recorded each watch，where possible，using either azimuth or transit bearings.

7. Steering Gear and Autopilot

The officer on watch (OOW) should ensure that the SOLAS requirements for the operation and testing of the steering gear are observed. Steering control of the ship will comprise manual steering，probably supplemented by an 6．罗经

磁罗经：磁罗经是安装在驾驶台上方的船舶中线上并有一个潜望镜，以便从操舵位置可以读取罗经读数。磁罗经自差应当在每次改变航向和在一个稳定航向上航行时确定，至少每个航行班测定一次。测定的结果应当记入航海日志和自差簿中。应当保存罗经自差卡并置于驾驶台上。

陀螺罗经：建议陀螺罗经应当连续运转。如果由于某种原因停用，应当在使用前重新启动并随后进行检查以保证罗经运转稳定和读数准确。需要对罗经进行速度和纬度改正。陀螺罗经能支持许多分罗经，包括位于应急舵处的分罗经。驾驶台上的分罗经应当至少每个班次和多次操纵后与主陀螺罗经比对一次。其他分罗经应当经常校对。如果可能，每个班次应当使用天体方位或叠标方位对磁罗经和陀螺罗经误差进行检验并记录。

7．舵机和自动舵

值班驾驶员应当保证遵守国际海上人命安全公约关于舵机的操纵和测试的要求。船舶舵机的控制应当包括手动和自动操舵装置。如果装有自动舵，要求有一个操舵方式选择开关用于自动和手动操舵转换和一个手

automatic pilot. If an autopilot is fitted，a steering mode selector switch for changing between automatic and manual steering，and a manual override control to allow the OOW to gain instant manual control of the steering，will be required.

Whenever the nature of the surrounding waters and weather conditions allows automatic pilot to be done，the automatic pilot should be used. The OOW should bear in mind the necessity to comply at all time with the requirements of SOLAS. The OOW must supervise changes of steering mode from hand to auto and vice versa. Adjustment settings of weather and rudder should be made by the OOW prior to engaging the auto mode. Once in the auto mode the performance of the steering must be monitored closely to see if the settings are having the desired effect，and then fine-tuned as necessary. During thi s period the helmsman must stand by the helm and assist in the monitoring. When changing from auto to hand steering，the OOW must take into account the need to station the helmsman and to put the steering in manual control in good time to allow any potential situation to be dealt with in a safe manner.

Hand steeri ng mode should be used during the first 30 minutes of each watch；in confined waters；in restricted vi sibility；within 5 miles of other cl osing vessel s，navi gation aids，obs tructions，etc.；and when other circumstances deem it prudent.

Helm orders must be loud and clear and leave the helmsman in no doubt as to what he is required to do. These orders must be repeated in a similar manner by the helmsman. The steering is to be closely monitored at all times 动超驰控制开关用于允许驾驶员进行瞬间手动操舵。

(override control超驰控制装置，用于抵消自动控制的装置或系统)

只要周围水域的情况和天气条件允许，就应当使用自动舵。值班驾驶员应当牢记必须始终遵守SOLAS 公约的规定。值班驾驶员必须监督操舵方式从手动操舵转换到自动操舵或从自动操舵转换到手动操舵。值班驾驶员在接通自动操舵前，应当进行气象和舵角的设置调整。一旦设置为自动操舵，必须密切监督操舵性能，看看上述设置是否达到希望的效果，必要时，再进行微调。在这段时间，舵工必须站在舵旁并且帮助监督。当从自动操舵转换为手动操舵时，值班驾驶员必须考虑舵工是否就位和及时转换为手动操舵，以便以安全的方式处理潜在的情况。

(in good time 及早地；准时地)

(bear in mind 记住)

(prior to 在前，居先)

在每个班次的开始30分钟；拥挤水域；能见度不良；距驶近的他船、助航设施、障碍物等5海里以内和其他需要谨慎的环境时，应当使用手动操舵。

舵令必须响亮、清楚，使舵工确切知道要求他做什么。舵工必须按同样的方式复诵舵令。操舵必须始终监督以保证舵令被舵工正确复诵和执行，所操纵的航向是正确的。监督操舵在引航水域尤为必要，保证保持航

to ensure that helm orders are correctly repeated and executed by the helmsman，and the course being steered is the correct one. Close monitoring of the steering i s particularly necessary in pilotage waters，and it i s the responsibility of the OOW to ensure that the course is being maintained and helm orders are being executed correctly.

When operating an autopilot，the course to steer will need to be manually set on the autopilot and the autopilot will steer that course until a new course is entered.

8. Course Recorder

The course recorder should show GMT，and when the ship i s at sea the position，wind，and weather at noon shall be entered on the recording paper.

9. Revolution Per Minute (RPM) Indicator The RPM indicator must be monitored by the OOW，particularly in pilotage waters，to ensure that the RPMs desired are answered when maneuvering and maintained when at sea.

10. Rate of Turn (R.O.T.) Indicator

The OOW，in addition to listening to the clicks of a gyrocompass (two clicks for each degree)，should observe the rate of turn indicator during course changes and any time when applying rudder. Knowing how fast a vessel turns with various angles of rudder i s a tremendous aid to a shiphandler especially when entering a channel. Most indicators show in tenths of a degree to a maximum 2°per second the rate of turn to port and starboard. The rate of i ncreasing or decreasi ng can be used to advantage by both the OOW and the helmsman. There shoul d be a rate of turn indicator on the bridge i n addi tion to one on the helm. It i s 向和舵令被正确执行是值班驾驶员的责任。

当采用自动舵操舵时，要操的航向需要手动设置在自动操舵仪上，并且自动操舵仪将按该航向操舵直到新航向输入为止。

8．航向记录器

航向记录器应当显示世界时，当船舶在海上时，应当于中午将船位、风向和气象情况记入记录纸上。

9．(主机)每分钟转数指示器(RPM)

值班驾驶员应当监视每分钟转数指示器，尤其是在引航水域航行时，以保证得到当操纵时期望的转速和在海上保持转速。

10．旋转速率指示器

在转向期间和用舵时，值班驾驶员除了听陀螺罗经的滴答声外（两声滴答为1o），还应当观察旋转速率指示器。知道对应各种舵角船舶旋转多快对操船者是大有帮助的，尤其是当进入航道时。大多数指示器显示向左和向右每秒十分之几度到最大2o。值班驾驶员和舵工利用旋转速率的加快或减慢可以得到很大益处。除了在舵位置处有一个指示器外，驾驶台也应当有一个指示器。值班驾驶员知道旋转速率指示器是按每分钟旋转多少度还是每秒钟旋转多少度校准的是重要的。

important for the OOW to know whether the R.O.T. is calibrated in degrees per minute or degrees per second.

11. Doppler Speed Log

This indicator will provide information on lateral motion of the bow and stern and the forward and aft movement in knots，meters，or feet per second. An arrow should also indicate the direction of movement. The Doppler speed log is a tremendous aid when anchoring or docking. It should al so be monitored at sea by the OOW and compared to other instruments and speed between fixes for verification purposes. The OOW must be aware of whether the Doppler mode i s “water track” or “ground track”. Some Doppler logs fitted to ships can change automatically from one mode to another which is very confusing and dangerous to the navigator.

12. Binoculars

Although binoculars should be kept handy，it is not necessary，as on Navy ships，for the OOW to strap them about his or her neck. However，they must be desi gnated for the watchstander’s use and should be kept in a designated box. While in use they should be carefully handled. The proper adjustment for focusing should be made prior to assuming the watch. Binoculars can be individually focused or center focused for both eyes.

The most common marine binoculars are designated 7×50，meaning 7 powers and an objective lens 50 mm in diameter，making them particularly suitable for nighttime use. The bigger the lens the more light-gathering ability is provided by the binoculars.

To care for your binoculars：

1) Keep the lens covers that come with the 11．多普勒速度计程仪

该指示器将显示以节、米或英尺/秒为单位的船首和船尾横向运动和向前和向后运动的信息。一个箭头指示运动的方向。当锚泊或进船坞时，多普勒速度计程仪是非常有帮助的。在海上，值班驾驶员也要监测它并与其他仪器和两次定位之间的速度进行比较来确认。值班驾驶员必须清楚多普勒计程仪的工作方式是对水航迹还是对地航迹。一些装船的多普勒速度计程仪能够自动从一种工作方式转换到另一种工作方式，这很混乱而且对航海者也是危险的。

(lateral motion 横向运动，侧摆)

12．双筒望远镜

尽管望远镜应当保持在手边，但也不必要像军舰那样，值班驾驶员把它挂在脖子上。然而，望远镜必须指定供值班人员使用并保存在指定的盒子中。使用时，望远镜应当小心拿持。值班前，望远镜应当认真调节聚焦。调节聚焦可以分别单眼进行或双眼中心聚焦。

最常用的航海望远镜是设计为7×50，意思是放大7倍，物镜直径为50毫米，使得它们尤其适合夜间使用。物镜越大，望远镜提供的聚光能力越强。

保管望远镜：

1)望远镜不使用时，要将随镜的镜盖盖

binoculars on the lenses when the binoculars are not in used，thereby keeping the optics free from dust and finger smears.

2) When wiping the lens，use the lens cloth that comes with the binoculars，or a soft，lintless cloth.

3) To remove any remaining dirt or smudges，add one or two drops of alcohol to the cloth.

4) Store the binoculars in a moisture-free area.

13. Flashlight

A flashlight and a penlight are mandatory for OOW during night watches. 上，以保持镜片没有灰尘和手印。

2)擦拭镜片时，使用随镜带来的擦镜布，或软的无绒的布。

3)为了除去残留的污垢或污迹，往擦镜布上滴1~2滴酒精。

4)望远镜存放在没有潮气的地方。

13．手电筒

手电筒和笔形电筒对夜间值班驾驶员是必要的。