- •The Seafarer's Language Course
- •Standard marine navigational vocabulary introduction
- •Standard marine navigational vocabulary departure
- •Verifying that something has been done.
- •Ship/shore safety check list
- •Introduction
- •Introduction Pilotage Exchanges
- •Standard marine navigational vocabulary
- •Standard marine navigational vocabulary
- •Introduction Engine breakdown
- •Glossary
- •V.H.F. Very High Frequency. Term commonly used to describe short range radio telephone equipment.
- •2.5 Periodic Checks of Navigational Equipment.
- •3.6 Echo Sounders
- •3.8.2 The operational handbook for the aid and current navigational warnings should be consulted, to ensure that proper corrections are applied.
- •3.10 Hydrographic Publications
3.6 Echo Sounders
3.6.1 The echo sounder should be used, both when making a landfall and in coastal waters, and particularly in areas where chartered depths must be treated with caution.
3.6.2 When approaching soundings, the echo sounder should be switched on in ample time, ensuring that a zero mark is being recorded. It should be operated on all ranges and scales regularly until a sounding is obtained. Care should be taken where units of soundings on the echo sounder are different from those of the chart in use.
3.6.3 The time of crossing the more important depth contours should be recorded in the deck log, with distance recorder reading.
3.7 Speed/Distance Recorders
3.7.1 The speed/distance recorder should be operated as soon as it is safe to do so.
Readings of distance through the water should be entered in the deck log at the end of each watch, at times of establishing positions (where these are recorded in the deck log) and when course or speed are altered. Readings should be entered on the chart with any position.
3.8 Electronic Position Fixing Aids
3.8.1 Electronic position fixing aids should be employed in conjunction with other available aids to navigation. The Officer of the Watch should be thoroughly familiar with their use, and limitations, including the application of corrections to read-outs.
3.8.2 The operational handbook for the aid and current navigational warnings should be consulted, to ensure that proper corrections are applied.
3.8.3 When entering the area of coverage of a particular aid, the equipment should be set up in accordance with the operating instructions and there-after monitored to ensure that the equipment is operating correctly. Positions should he checked periodically using other fixing methods to ensure accurate positional information is available when needed. Positions obtained when navigating in areas on the limit of coverage of the aid, and where lattice lines are close together and/or at acute angles of inter-section, should be treated with caution.
3.9 Direction Finders
3.9.1 The calibration table and curves should be verified by frequent observations. A routine check calibration should be carried out whenever possible, and recorded at intervals of not more than 12 months and whenever a change to ship's structure and/or rigging is likely to affect the accuracy of DF bearings.
3.10 Hydrographic Publications
3.10.1 One officer should be responsible for keeping charts up-to-date from the latest available Notices to Mariners. The same procedure should apply to other navigational publications. A record should be kept of all navigational warnings, together with details of cleared routes and areas still dangerous to shipping from mines or other causes.
3.10.2 As a general rule, only one chart should be in use at any one time. Particular consideration should be given to the use of charts produced and issued by local national hydrographic services where there are clear advantages. Every care should be taken when working with charts of different scales and different sounding units.
3.11 Emergency Navigation Lights and Signal Equipment
3.11.1 The Officer of the Watch is responsible for ensuring that emergency navigation lights and signalling equipment are in working order and ready for immediate use.