2ND MATE EXAM ORAL QUESTIONS AND ANSWERS BY CAPT-PURI - LATEST QUESTIONS
He himself told the answer saying that,open the extinguisher take very little amt of foam concentrate and water from the extinguisher n put the water on foam solution,if foam developes its okk.
But for portable foam type fire extinguisher water and the foam solution is already mixed and stored in to the cylinder with a CO2 cartridge inside....then?
alter course to port and keep the mark on your starboard side
when we observe 2 or more terrestrial prominent objects in a line it is called a transit bearing.the transit bearing of these prominent objects are sometime joined by a line and true bearing is mentioned on chart otherwise we can use the parallel ruler to see their transit bearing value and compare with compass bearing taken from vessel to obtain compass error
i answered either dcp or co2 portable extinguisher;fire blanket;fixed fire fighting system for deep fat fryers.
Hatchet is basically a term used for hammer, it is used to cut/break/free any object which may be entangled to the life boat.
For eg. Cutting of painter wire.
If very small object is stuck/entangled to the boat, you may cut it with "jack knife" which is commonly known as Swiss knife (object which has knife,scissor, fork, spoon, etc.)
Q. 9) What is crash stop ?X
As described above, when the engine of the ship is stopped, the ship will continue moving in the same direction for some more distance due to inertia. Here no astern command is given (used to produce braking effect for ships), and hence ship will travel more distance in the inertia stop method.
Crash stop is usually the term used when the ship has to sudden stop in emergency situation. Here the engine, which is moving in an ahead direction is given an order for full astern, leaving the rudder in the mid ship position to stop the ship within minimum distance and shortest possible time. To know the complete procedure read for crash stopping read crash manoeuvring.
In general operation i.e. berthing or departure of the ship from port or manoeuvring through channel or narrow passage, the above two methods are combined for a swift navigation of the ship i.e. in between giving an astern kick to stop and slowing down the ship's speed for better manoeuvring.
The stopping distance data and chart is given in sea trials of the ship and made handy on bridge for reference. Every deck officer must refer this data to master the navigation of the ship.
The data may differ when used due to variation in weather condition, ships loading, stability and other factors; however, deck officers can compare the trail data and make use of it in practical situations.