Email Attachments to NMC

1/08/18:  Due to limitations in the Coast Guard email system, NMC is cautioning mariners about email attachments as follows:

  • The system will not accept attachments larger than 10 MB. It is highly recommended that attachments larger than 8 MB be split into multiple e-mails. When sending multiple e-mails, please ensure the subject of each e-mail indicates the order of the attachments.
  • The system will not accept compressed (ZIP) files, regardless of size.

E-mails that are larger than 10 MB or that include compressed files as attachments will not be delivered. Furthermore, neither the sender nor intended recipient will be notified of the delivery failure.

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