Thank you very much for your email.
Regarding your order, although you requested us to ship them by sea vessel, it is not possible for us to make it.
Our shipping schedule is as follows:
Thursday: We dispatch items from our distribution center.
Sunday: The sea vessel leaves from Japanese port.
Next Sunday: The sea vessel arrives at Bang Kong port.
Thursday: Items arrive at NTI.
It means, if you need them ETA Sep 18th by sea, we have to dispatch items today.
Therefore, please let us use air cargo for your additional order.