One of the main engine unit, exhaust temperature drops rapidly suddenly. Vessel is manuvering with pilot on. 🙂 what do you think is the cause?

that some ships do not have clear indication on inlet or outlet, but in all designs,

Cooling SW/ FW always enters from top and exited from below. ( Cool to hot )

Vice versa the Coolant(JCK or OIL) enters from TOP and exits below. ( Hot to cool )

Helps if you come from a messy piping ship or just tracing pipes. 🙂

initial troubleshootings
1) piston ring broken

Changed all the piston rings and inspection of liner. All okay.

& it turns out there is a broken oring on the piston pin on tanabe MAC, which not everyone knew of or change during major overhaul.

Compressor( High pressure, Hot gas refrigerant) > Condenser ( High pressure, Cooled liquid refrigerant) > Drier > Thermo expansion valve ( Low pressure, Cold liquid refrigerant) > Evaporator (Heat exchange takes place here, Low pressure, Hot Gas/Liquid refrigerant) > Compressor

Common problems i can…[Read more]

How to check is… to run 2 generator on synchronise.

Changed the switch to manual, reduce the governer on the switchboard to reduce the load until negative. The generator should trip.

Ive only know of 2 chemical suppliers, DREW MARINE & UNITOR

For Unitor, jacket water treatment are using Natfleet to increase Nitrate levels. Nitrate levels are best kept above 1200.

Typically fuel oil analysis are required before using of the fuel oil for the engines, samples will be sent to lab for testing. examples of laboratories( Maritec or viswa lab )

Purpose for fuel oil anaylsis is to adhere to the marpol annex 6, and ensure that proper and…[Read more]

2 Stroke engines
– Power, Slow speed. Used for vessel main engine.
– Every 2 stroke of piston movement there is 1 power stroke. ( UP(compression stroke), DOWN(exhaust+ power stroke) )
– 1 exhaust valve
– suction from scavenging ports instead of suction valve.

4 Stroke…[Read more]

If not if taking out for cleaning for routine maintenance, cleaning the piston(25), check the condition of the gasket on the valve disk(10).
Make a marking on the body before dismantling, as the center body consists of 2 different holes passage, 1 from inlet to the…[Read more]

Test can be done through mega tester or a multi meter. There are 2 common test that are carried out on the motor during routine maintenance or suspected motor fault.

1) Low insulation test
This is to make sure that neither of the 3 phases wiring are touching the body of the motor which will result in 440V low…[Read more]

In the case of leakage area as shown above, Low low level alarm will be activated. When the alarm is activated, Both isolating valve will be activated & No.1 Lo pump will be switched over to No.2 pump.

4 Rams system work in a Pair. Thus when #4 Ram pipe is leaking, #3 & #4 ram is then isolated.

Through Lo #2 pump and only…[Read more]

From the above Unloader, the left box is when the steering is in operation and the left is for unloading.

The left box consist of 2 check valves, when in operation, the left check valve opens and prevents the return of the oil, and the right check one for the returned oil is opened by the left line, thus allowing the flow back.

Relief valve…[Read more]

1)Steering gear pump is uni directional. During idle mode, there are no pumping stroke.
2)When torque motor sense signal from bridge, the directional control valve will operate to the direction by bridge and pump will be put to stroke.
3)After 10-20sec of starting, the unloading device will activate and pilot…[Read more]

1) Taken once a month, to check all is well, Pmax and Pcom is normal range, no abnormalities.
2) Normally i would take performance when changing over. For example this week AE #1 and im changing over to AE#2, i will take both performance at ~85% load. Depend on your company requirement.
3) Next week, when i’m changing from Ae#2 to…[Read more]

1) Just know the essential valves for your generator. How many valves to top up your sump oil. How much consumption of Lub oil per month. Normally 100 – 300 for 3 generator depend on running hour.
2) How many valves to close when overhauling. Mainly where the FO valves, cooling water valves to close and where to drain,…[Read more]

Annex VII – Prevention of pollution by Ballast water
Annex VIII- Prevention of pollution by Anti fouling paint
Annex IX – Prevention of pollution by noise from ship
Annex X – Prevention of pollution by vibration from ship

He was confused when i said panadol. He flipped the medicine book looking for the term, until i told him to look for paracetamol. When he found and…[Read more]

what i feel is important and the very basic that we need to know.

https://www.youtube.com/watch?v=3X8drKsdf5E

1) Clove hitch – securing

2) Round turn and 2 half hitch – securing

3) Taut…[Read more]

1) current setting
2) welding sticks ( must be good )
3) angle of your stick
4) speed of stick
5) Method of manipulation < take practice.

I think many will lose touch upon graduation. Tbh i dont think the welding practise we had in SMA is sufficient…[Read more]

please pack & compact the flaming incinerable garbage, bring down engine room for incineration following marpol annex 6 (incineration reg).

https://www.youtube.com/watch?v=82qtI7C-6Zg

Winches testing must be conducted annually, and for many case many do not know whats the reason/ concept for it, and how to test it, Thus testing it wrongly. It is not tested to make sure the brakes are holding.

Firstly the reason for testing the winches is…[Read more]

One grave mistake is not noticing the difference between the 2nd stage suction and 2nd…[Read more]

Adding on to what cadets can buy:

1) Extention plugs
2) Travel Adapter
3) Socks, towels, for me i just go and spend Emart credits. Finish contract just throw them away
4) its advisable to get…[Read more]

I think after coc 2, most of us should have quite a tidy sum? Afterall not doing anything with it is losing to inflation. Bank interest is pathetic.

Above is posted on 22/2/2020

1. Prepare Repair Specifications in advance for budgeting and inviting quotations
2. Pipe Lines
3. Structural steel renewal, for which plate thickness gauging may be required.
4. Overhauling of Mooring Equipment.
5. Special servicing requirements
6. Overhauling and testing of Cargo Gear ( cargo pumps if the vessel…

[Read more]

ship’s electrical engineer will prepare the ship’s power receiving terminal box and should do following things:

• Ensure the receiving box is not obstructed with any object, pipes or spares. It…

[Read more]

Main engine bearings are opened up for inspection or r…[Read more]