You are meaning to meet on Jan sale, right?
If yes, you can get goods on 23-Dec-13 at port and will use lead time 7 days for clearance process ,so, you will be got goods on 30-Dec-13.
But if you got goods on wk51 shipment, finally you can get goods on 6-Jan-13 beginning on Jan.
We understood for this case, it mistake from our side but we need to save cost
So , Is it possible to accept the delayed to ship by Boat in this week.