final-circular-letter-no-no-1886-rev-6-implementation-of-resolution-a-107828-imo-ship-identification-number-scheme-secretariat Date: November 11, 2016 final-circular-letter-no-no-1886-rev-6-implementation-of-resolution-a-107828-imo-ship-identification-number-scheme-secretariat Posted on November 11, 2016