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Explain the basic properties of a free gyroscope Gyroscopic Inertia: Precession: With reference to marine gyro compass, briefly explain the following: Drifting Tilting Drifting & Tilting: How a free gyroscope is converted into a north seeking device Top Heavy Control Force Path traced by a North seeking gyro: Operating principle and care of gyro compass…
Buoyage Module Introduction – Interest and Need In previous lessons we have looked at how to fix the ship during the daytime using a number of differing means. There are a number of other aids by which to keep a ship safe and we will look at these now. First we will look at the…
STEERING PROCEDURES Introduction All steering systems involve sending rudder command signals from the position where the vessel is navigated to the steering gear compartment where the machinery for controlling rudder movement is located. These rudder commands may be manually generated by a pilot/helmsman or electronicallyvia an automatic pilot. The method of steering the ship is…
Updating ENC Data: ENCs are updated by weekly ‘Notices to Mariners’ issued by Hydrographic Offices / Regional ENC co-ordination centers ( RENC) and corrections are received on the vessel either by email or data file (AVCS DVD). The actual updating is either applied to the ECDIS chart database automatically or by the user. The ECDIS…
In mid September a loaded container ship is in position 26˚ 30’ N 121˚ 20’ E bound through the strait of Taiwanfor Honkong, steaming on a SW’ly course at 16 kts. A weather report from indicates that a typhoon currently inposition 21˚ 30’ N 117˚ 15’ E has re-curved on to a NE path, moving…
Wind pattern The wind direction and speed is determined by the position of the Highs and Lows. Wind flows outwards from the high and towards the low, in the northern hemisphere the direction of wind isanticlockwise around a low and clock wise around a high, similarly in the southern hemisphere the wind flowstowards the low…
Pressure patterns: Common for July and January Permanent High in North and South Atlantic (35˚N/S)Permanent High in the Indian ocean SE of Mozambique (35˚S)Permanent high in North and south pacific (35˚N) and 35˚S off Chilean coast.Permanent Low SW of Iceland close to the east coast of green land. July (Northern summer / Southern winter) Atlantic:…
North Atlantic: July: Northern Summer January: Northern Winter South Atlantic / S. Indian Ocean / South Pacific Ocean January (summer): Pack Ice: July (winter): The icebergs can be traced as follows:
Specific regulation RADIO REPORTING SYSTEM: MARITIME RADIO SERVICE: PILOTAGE SERVICES:
DIFFERENTIATE BETWEEN ADOPTED AND NON-ADOPTED ROUTEING SCHEMES. ADOPTED SCHEMES: NON-ADOPTED SCHEMES: FIVE PRECISE OBJECTIVES OF THE IMO ROUTEING. STATE WHERE INFORMATION ON TSS CAN BE OBTAINED. Non-compliance with the TSS is considered a serious maritime offence, on summary conviction is liable to a fineof maximum £ 50,000/-