Ahead Movement of the Propeller The effect of transverse thrust whilst making an ahead movement is arguably less worrying than that of an astern movement, perhaps because the result is less noticeable. (a) The helical discharge from the propeller creates a larger pressure on the
Life Saving Appliances Maintenance Equipment / Requirement Regulation Ship Type Interval Maintenance By Remark Maintenance and inspection SOLAS II-1/3-9.3 SOLAS III/20.4 SOLAS III/20.7.2 MSC.1/Circ.1331, Annex, para. 4 All Monthly Crew In accordance with manufacturer’s instructions. Maintenance of wires acc. to SOLAS III/20.4. Means of Embarkation
CATZOC on the ENC in simple terms refers to the Quality and Accuracy of survey data and the applicable error in chart datum that sometimes can greatly affect vessel’s UKC calculations. Zone of Confidence (ZOC) has 6 Categories named A1, A2, B, C, D
On a oil tanker the cargo oil tank atmosphere changes as per various operations the ship is performing. These includes the Key Cargo Operations such as: Discharging Tank Cleaning Purging Gas Freeing Inerting Loading When performing these key cargo operations safely, The most important
What is Inert Gas ? It is a gas which contains insufficient Oxygen to support combustion. Keeping tanks inerted means cutting one side of the fire triangle and hence avoiding any chances or Fire or Explosion. Why do we need Inert Gas ? An Oil
Speed Many casualties are proven to occur as a direct result of excessive speed. Its effect can be insidious and a Master may find that he cannot keep up with events, which are happening too quickly. Effective control of the ship is slowly but inexorably
Vessel Stopped If the tugs apply the same bollard pull of say 15 tonnes each, it is to a position 80m fore and aft of the pivot point. Thus two equal turning levers and moments of 80m x 15t (1200tm) are created resulting in even
Immediate actions: Take the conn. Follow emergency procedure as per company emergency procedure manual, which should include: • Sound general emergency alarm. • Stop Engines. • Announce by PA. • Head count, look for casualty and establish communication. • Close watertight doors. Activate SOPEP and
Duties of the master in case of a collision In case of collision between two ships, it will be the duty of the master of each ship, without endangering his ship, crew and passengers, if any: • To render to the other ship, its master,
Crash Stop No type of main engine can be reversed immediately from full rpm ahead to full rpm astern because no engine can drive the propeller at full revolutions astern while the ship herself is moving ahead at considerable speed. The application of