Original Medical certificate were mandatory for most of STCW endorsement like OIL DCE and GMDSS Endorsement. Sometimes the cost of getting such Certificates were more than the MMD Fees for Personal Document !
With the latest DG Shipping Circular, it is no more required to submit Original medical report.
You can download it at MS notice 8 of 2014 (pdf)
Another welcomed gesture by DG Shipping is that self attestation of this Medical report is accepted and notary attestation for them not required, however you will need to bring the original medical report for cross checking at MMD.
Also note that for competency examination booking, you still need to submit the original medical report along with the eye sight test certificate.
Do not forget to share this to help mariners going for STCW endorsement soon.