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Understood from the above that Evaporated seawater meaning our distilled water generated from fresh water generator.

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.

If found faulty, some may want to replaced as a whole provided there is a spare.

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]

Isolating valves

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]

Operations of 4 Ram Steering gear

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]

Performance

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]

Routine job for 3e

Tappet clearances
1) 2 rounds of your Flywheel is complete cycle of your 4- stroke generator, so for you to finish your tappet you just need to turn 2 rounds. Each round 3 units to adjust.
2) flywheel got 3 locations and marking; 1/6, 2/5, 3/4. 1st round of turning flywheel ( adjust the unit which both exhaust and suction…[Read more]

When taking over,

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]

Examiner: Leong

Marpol
Eedi , seemp, eeoi
Drydocking prep
Enclosed space entry
Co2 drawing, weekly, monthly test
Ums regulations and requirement

Yeah totally. however i think whats most important is we should make sure this website is stable before opening the gates.From what I see that this website is secured from the padlock and https so no worry no information leak/ hackers.

To be very frank, i feel that all the topics as we discussed and posted in this forum is much more useful and relatable as what our course notes and exams are.

We should encourage the students from the institutions, just for their benefit at least for those who are going to sail.

Hi peeps, would it be useful if we allocate a forum and each drawing as a topic,
from my understand some drawings might bring further discussion on the topic for own understanding, for example Steering gear, fuel pump etc.

That is interesting, we can give or use examples of memory aids we use for remembering important information for our long term memory. @shipmare You start ah. lol

Im suggesting a forum on study methods? Perhaps mnemonics? Like a memory aids, i think it will be useful for people taking orals/ or for students taking their exams.