Sea-time requirement for Merchant Navy Master Examination
I will quote from the DG Shipping site itself and my interpretation of the same:
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Minimum Age : 18
1. Candidate must hold certificate of competency as a first mate (FG) on ship of 500 GT or more.
2. Approved sea service as an officer in charge of navigational watch on ships of 500 GT or more of not less than 3 yrs. However, this period may reduced to not less than 30 months of pro-rata, if not less than 1 yr of such service has been performed as a chief mate.
3. Minimum 12 months of approved sea-going service as an officer in charge of a navigational watch on ships of 500 GT or more after delivery of First Mate (FG) COC.
4. Shiphandling /Manoeuvring Simulator course, Advanced Ship Management course , written and oral examination.
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The above details can be found after login in from the following webpage of E Samudra (D.G. SHIPPING) :
http://220.227.116.130:8000/esamudraUI/well.do?method=loadPage
Then clicking the "Examination" link under the Seafarer Column
Then clicking on the "Application for Eligibilty Assessment"
You can make your selection and find the above details. Sorry but was not able to find any direct link to the same.
I interpret this as follows -
Point 1. is self explanatory.
Point 2. simply means that You should have served minimum 36 months onboard a ship of GT >500 (FG). The second part is confusing and I will explain in the end. For now, just remember that if you have done 12 months as Merchant Navy First Mate (read Chief Officer) then this time may be reduced to 30 months.
Point 3. After your Mates COC you need to sail for minimum 12 months irrespective of your rank. Please note here that it is after the “delivery”, I am not very clear whether "delivery" means the issuance of COC or sailing after receiving the COC. Personally I would suggest to take your COC then only go for sailing (Better not to take any chances with MMD...)
Point 4. You should have completed SMS, ASM and passed in your written and Orals Examination ...
Now take few examples to explain.
Mr A, Mr B, Mr C and Mr D got their COC on the same day and start to sail on the same day as a "officer in-charge of navigational watch ". Note here that none are sailing at support level (Rating) and hence their sea time is getting counted from that very day.
Now all complete their 18 months also on the very same day (I know that it is sounding too hypothetical), but only Mr A went for Mates exam others had their own problems and reasons to sail 1-2 contracts more prior Mates Examination.
Now Mr B after 21 months went for Mates exam ,
followed by Mr C after 28 months
followed by Mr D after 36 months.
It is totally irrespective for sea-time calculation whether you sail as 2nd Mate or 3rd Mate.
The difference starts AFTER THIS STAGE….
At this stage lets again bring them together. All now have cleared their mates and have valid First Mate (FG) COC. I know it is hard to imagine as to what was Mr A doing for 18 months ? So let’s assume he started his company and tried some business and got involved Mr B and Mr C too. Business demanded more fund and so all need to sail again and so yet again Mr A, Mr B ,Mr C and Mr D are going to sail on the same day. The question is what is the Minimum and Max sailing requirements so for each to appear for Merchant Navy Master’s Examination or for ASM course? We will take one by one.
Mr A:
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If he joins directly as a Merchant Navy First mate then sea-time required is 12 months (as per the latter part of point 2 to complete 30 months in total) ,while if he joins as 2/O or 3/O and continues to sail at the same rank then it will be 18 months (to complete 36 months as per first part of point 2 above).
The first case is his Min and the second case is his Max.
For the cases which lie between these extremes like if he gets promoted let’s say after 6 months to C/O, so till now he has done 18+6=24 months and for completing remaining sea-time of 12 months he needs to sail 12/1.5 = 8 months more. He is not fulfilling the second part of point 2 and so he is required to calculate the same on “Pro-rata” basis. So total sailing required 6+8=14 months.
Mr B:
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If he joins directly as a Merchant Navy First mate then sea-time required is 12 months (as per point3 and hence satisfying second part of point 2 also), while if he joins as 2/O or 3/O and continues to sail at the same rank then it will be 15 months (to complete 36 months as per first part of point 2 above).
The first case is his Min and the second case is his Max.
For the cases which lie between these extremes like if he gets promoted let’s say after 2 months to C/O, so till now he has done 21+2=24 months and for completing remaining sea-time of 12 months he needs to sail 12/1.5 = 8 months more. So total sailing =10 months ….wait this is not satisfying point 3 so he needs to sail extra 2 months e.g. 12 months full in this case too.
Mr C:
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If he joins directly as a Merchant Navy First mate then sea-time required is 12 months (as per point3), while if he joins as 2/O or 3/O and continues to sail at the same rank then it will be 12 months again (again because of point 3).
The first case is his Min and the second case is his Max.
Since Min/Max is same 12 months Mr C is having no confusion for the cases which lie between these extremes.
Mr D:
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If he joins directly as a Merchant Navy First mate then sea-time required is 12 months (as per point3), while if he joins as 2/O or 3/O and continues to sail at the same rank then it will be 12 months again (again because of point 3).
The first case is his Min and the second case is his Max. One thing to note here is that Mr C has already completed his 36 months and the only reason he cannot go directly for Master Exams is because of Point 3.
Since Min/Max is same 12 months Mr D too is having no confusion for the cases which lie between these extremes.
In short, if you have sailed more than 24 months as Junior officer and then go for your exams you just missed the advantage which you were getting from the second part of the Point 2. Anything after 24 months is not getting added anywhere for sea-time calculations for Merchant Navy Master Examinations. Anything in between 18 months to 24 months after Second Mate Exams needs pro-rata calculation based on Point 2.
- X
2 Hello everyone, Its well clear "Delivery" of COC is exactly means if u have the Mate COC in your hand, Seatime will be counted for ASM after delivery of COC, well confirmed with Kolkata MMD, Thanks
- X
0 Hi rishi
After my mates CoC I have sailed 7 months as second mate and 9 months as mate . Will you pl let me know if I can apply for ASM. My total sea time is 34 months. Also when I open the DG shipping guidelines I did not got the 3rd point mentioned by you. There is only second point mentioned.
thanks - X
1 Hi friend, thanks for your query and reminding that the seatime-calculator link was not working. We got lot of query regarding the same doubt and so later we created Sea-time Calculator. Hope it helps you out.
As per feedback of Rahul Prakash above and Praveen Ojha please note that ASM time gets calculated after delivery of Mates COC. We are overdue to update that page, hope to resume work within coming months. Let us know if you still have any doubt. Best of luck - X
0 Hi, please help me with my peculiar situation.
I had 25 months before Mates.
After delivery of Coc : I sailed 4 months as 2/0 and 8.5 months as C/O.
Please confirm that i meet the requirements.
Thank you
Arunabh Kumar - X
0 Hi Arunabh , we highly recommend you to complete your profile and then check STCW 2010 seatime calculator. It will not only show you how the calculation for required Master Exam is done but guide you of other STCW 2010 Courses and much more.
With whatever details you have told, it seems like you can go for Captain Examination now ! Best of luck friend.


