These are non-self-supporting tanks consisting of a thin layer (membrane) supported through insulation by the adjacent hull structure. The membrane is designed in such a way that thermal and other expansion or contraction is compensated for without undue stressing of the membrane. Membrane tanks are primarily used for LNG cargoes (see Figure 24).
Friday, July 21, 2017
Membrane Tanks
These are non-self-supporting tanks consisting of a thin layer (membrane) supported through insulation by the adjacent hull structure. The membrane is designed in such a way that thermal and other expansion or contraction is compensated for without undue stressing of the membrane. Membrane tanks are primarily used for LNG cargoes (see Figure 24).
Friday, June 9, 2017
Lifeboat Regulation as per SOLAS
General requirements for lifeboat:
All lifeboats shall be of sufficient
strength to:
1. Enable them to safely launch when
fully loaded with their full complement of person and equipment.
2. Be capable of launched and towed when a ship
is making headway at a speed of 5 knots in calm water.
3. Except for free fall, each other
lifeboat to be launched by falls shall be of sufficient strength to withstand
when loaded with its full complement of person and equipment and with
applicable skates or fenders in position, a lateral impact against ship side at
an impact velocity of atleast 3.5m/sec and also a drop into water from a height
of atleast 3 mtrs.
4. The size, number and the capacity of
the lifeboat for a merchant vessel is decided by the type of the ship and
number of ship’s crew, but it should not be less than 7.3 m in length and
minimum two lifeboats are provided on both side of the ship (port and
starboard).
5. The requirement for lifeboat of a
cargo ship with 20,000 GT is that the boat must be capable of launching when
the ship is heading with a speed of 5 knots.
6. The ship must carry one rescue boat
for rescue purpose along with other lifeboats. One lifeboat can be designated
as a rescue boat if more then one lifeboat is present onboard ship.
7. The gravity davits must be hold and
slide down the lifeboat even when the ship is heeled to an angle of 15 degree
on either side. Ropes are used to hold the lifeboat in stowed position with
cradle. These ropes are called gripes.
8. The wires which lift or lower the lifeboat are
known as falls and the speed of the lifeboat descent should not be more then
36m/ min which is controlled by means of centrifugal brakes.
9. The hoisting time for the boat
launching appliance should not be less than 0.3 m/sec with the boat loaded to
its full capacity.
10.
The Lifeboat must be painted in international
bright orange colour with the ship’s call sign printed on it.
11.
A
fully loaded lifeboat in calm water has an engine speed of atleast 6 knots and
at least 2 knots when towing a 25-person life-raft and enough fuel for 24
hours.
Additionally for Tanker lifeboats
Self
rightening fully enclosed.
Self-contained air system (Oxygen bottle)
Fire protected lifeboat (Sprinkler system)
Regulation for
lifeboat engine as per SOLAS
1. Lifeboat shall be powered by a
compression ignition engine. No life boat engine can be used if the fuel used
in it has a flash point of 43˚C or less.
2. The lifeboat engine can either be two
stroke or four-stroke type, and can be started either by hand or by power.
3. The engine must be capable to operate
when life boat be flooded upto waterline of crankshaft. Power starting can be
by using accumulator batteries or hydraulic.
4. In power starting, normally two
independent rechargeable energy sources are provided. However, any starting
method should be capable of starting engines at 15˚C of ambient temperature
within two minutes of commencing of starting procedure.
5. The engine power is transmitted to
propeller through gearbox. The gearbox is capable of disengaging the engine as
well as engaging in either ahead or astern direction.
6. The exhaust pipe outlet is located
well clear of waterline.
7. Engine should be capable of operating
for not less than 5 minutes after starting from cold, with lifeboat out of
water.
8. Neptha or Butane spray is injected in air
filter to start from cold condition.
Saturday, June 3, 2017
MYTHS ABOUT MERCHANT NAVY SAILOR
| OK, so over the years I had several thousand clinched questions asked about Sailors and Merchant Navy. So here are some myths about sailors and sailing, along with the reality attached to it : Myth: Everybody gets seasick – WRONG!!! this is usually the first question everyone asks. So ur in the merchant navy eh? don't u get sea sick?? Sea sickness is exactly like motion sickness. Does everyone have motion sickness? NO!! so why would everyone get seasick? Yea people do get sea sick but not as often as normally believed. Sailor’s life is the easiest : There is always work on a ship. what work you ask? cargo needs to be loaded, monitored, secured. routes need to be devised for the next voyage , necessary engine repairs need to be done. The need of the hour is speed, so by the time you are done with your work in port , it is time to depart. It is your good fortune if you get to go out. Sailors can guzzle any amount of alcohol – Sure back then sailors and pirates had barrels full of ale and would get drunk at the drop of a hat. But these days that can lead to you getting sacked. Companies have a zero alcohol policy, thanks to all the drunken accidents caused by ancient mariners. Alcohol upto a certain percentage is allowed, anything above that is unacceptable. Which makes sense coz in that state ur a danger to yourself and your crew. So try being sober for 5-6 months and then guzzling crazy amounts of alcohol. Sailors make a ton of money – Not really. It firstly depends on the type of ship ur on. oil tankers etc will obviously pay more thanks to the inherent risks involved. Secondly it depends on your company. obviously some companies pay more than others but even then, a decent MBA from a good college or a masters will end up paying you the same amount. sure the starting salary has a wide margin, but 5-6 years down the line it is almost the same. I’ve been asked – Don't u get bored just looking at the sea everyday? Riddle me this, do u get bored looking at the same roads, buildings etc each day? Atleast at sea u often wake up to the sights of an island right next to you, or maybe a few dolphins swimming with your ship, or a pack of birds which fly for days along with your ship which in my opinion is fantastic. The night sky is unbelievably clear, the moonlight does wonders to the sea at night. You have to see it to believe it , I find it calming, the soft rustle of the ship cutting across the water, small ripples that run for miles. Sailor eh? What about pirates? – Pirates are like a corrupt government. you know its there but not much can be done. it is an evil that exists and probably will for several decades to some. i dont know if the movie franchise ‘pirates of the caribbean’ can be blamed for it but it sure has risen over the years. what can be done? Ships = Massive pollution – Ships are responsible for just 3% of the world total pollution. the rest comes from industries, automobiles etc. i know there have been a string of oil spills in the recent past but those were all accidents. Bottom line after all this is that Sailors are human too. we too work hard, we too have families to think about and no sailing does not imply living on a cruise ship. it sucks ad hurts that sailors are branded as people who just love to while away time and are not really serious about life. working on a ship is no piece of cake. We live with cuts, bruises, burns almost daily. The work environment is hostile, and it requires a great competence to survive at sea. the sea does not forgive incompetence. i know most of you cant help it coz this seems to be the general opinion for everyone. Source: LIFE IN MERCHANT NAVY ""MARINERS BLOG"" |
Friday, June 2, 2017
Tuesday, May 30, 2017
Monday, May 22, 2017
Qualities Of A Leader
- Lead.
- Manage Less.
- Articulate your vision.
- Simplify.
- Get less formal.
- Energize other.
- Face reality.
- See change as opportunaty.
- Get good ideas from everywhere.
- Eliminate boundaries.
- Get a ride of bureaucracy.
- Follow up.
- Put values first.
- Cultivates leaders.
- Create a learning culture.
- Involve everyone.
- Make everybody a team player.
- Stretch.
- Instill confidence
- Have fun.
- Be number:1 or number:2.
- Live quality.
- Constantly focus on innovation.
- Live speed.
- Behave like a small company.
Friday, May 12, 2017
Question Bank For Oral Examination for Class 1 and 2 (Marine Engineer Officers) Certificate of Competency
Singapore Maritime Academy
Class 2 & 1 Engineer CoC
Oral Examination for Class 1 and 2
(Marine Engineer Officers)
Certificate of Competency
|
1
|
Marine Diesel Engines/Marine Steam Plants
Model Questions
|
||||||||||
|
2
|
Boilers
Model Questions· Boiler stopped at low low water level
What would be your action.
|
||||||||||
|
3
|
General
a)
Pumps,
pumping systems
b)
Steering
gears, stabilizers
c)
Thrust
block, shafting, stern tubes, propellers, shipside fittings
d)
Cargo
handling equipment & deck machinery
e)
Refrigeration
machines, refrigerants, insulation of holds
Model Questions
|
||||||||||
|
4
|
Materials
Model Questions
|
||||||||||
|
5
|
Lubricating oils
Model Questions
|
||||||||||
|
6
|
Fuel Oils
Model Questions
·
If
you get a very bad fuel in your last bunker, how will you manage on board.
·
What
are the Standard ISO 1287 RMH 55 limitations for various FO contents (eg. PS
: Gravity, Viscosity, Flash Point, Carbon Residue, Vanadium aluminium, Water
Content Sulphur Ash) and their effect on engine if exceeding values.
·
What
is the effect of Low Sulphur fuel on engine.
·
What
all consideration you will keep in mind before ordering Bunker
·
Effect
of Pour Point on Handling Fuel.
·
How
to treat fuel oil. What is the effect
about various component.
·
How
is the purifier to treat the oil.
·
List
down fuel oil specification and problems encountered with fuel oil.
·
Bunker
specification. How to remove catalytic fines from fuel.
·
HFO
service Tank Drain v/v chocked, how to repair it with necessary safety
precaution
·
What's
viscosity Index?
·
You
have found a lot of water in fuel oil settling tank. What is your action.
·
You
have found oil in cascade tank. What
is your action.
·
What
are the connections (fittings) in a settling/service tank. Name them.
|
||||||||||
|
7
|
Electrotechnology
Model Questions
|
||||||||||
|
8
|
Naval Architecture
Model Questions
Load
Line
Types
of surveys?
|
||||||||||
|
9
|
Fire Fighting
·
What
are the fire detectors. Draw all of
them
·
Which
one is the most sensitive one
·
Your
junior reports to you that exhaust temperature of one unit of Main Engine is
high. What will be your action. (Looking for comparing Local & Remote
pyrometer and a possible cause of scavenge fire).
Model Questions
·
CO2 Flooding system. Draw a system with a pneumatic operated
cylinder not the one with wire and pulley.
·
Draw
and explain the High Expansion System
·
Comparison
between CO2 and Foam System advantages and disadvantage of each.
·
Draw
a smoke type fire detector with circuit.
·
Draw
all types of fire detectors.
·
What
is a fire tetrahedron?
·
What
is a fire door?
·
Smoke
detector (ionisation, light scattering).
·
What
inspection and maintenance you do on the fixed CO2 system.
·
Give
one fixed fire fighting equipment arrangement. Draw & Describe. Give technicalities of foam for this
purpose.
·
Disadvantages. Paint locker fire fighting arrangement
·
Draw
9L CO2 extinguisher
·
CO2
flooding system/requirement/regulation (figure)
·
(CO2
cabinet door circuit)
·
Draw
& explain all types of fire extinguishers
·
What
is fire tetrahedron? What is its importance? Draw the tetrahedron and explain sides.
|
||||||||||
|
10
|
Safe working practices
Model Questions
|
||||||||||
|
11
|
Automation and instrumentation
Model Questions
|
||||||||||
|
12
|
Emergency procedure and equipment
Model Questions· Scenario
Company
ordered master to reach port before sunset , otherwise they will have to wait
at anchorage for 3 to 4 days. So
master alter his courage and while running at full RPM, the ship ran
aground. Describe being Chief
Engineer, what immediate action to be taken.
Briefly about Survey Port State Control.
|
||||||||||
|
13
|
Pollution
Oil filtering equipment, oil
content monitor, sewerage treatment plant, incinerator.
Model Questions
|
||||||||||
|
14
|
Duties
a)
normal
duties
b)
emergency
duties
c)
use
of safety equipment
Model Questions
|
||||||||||
|
15
|
Casualties
Model
Questions
|
Subscribe to:
Posts (Atom)




