Bulk shipment for 40,000 to 60,000 tons, long term contract need

Times of bulk shipment monthly (40,000 to 60,000 tons per load)
First year first six month , one shipments per month
First sixth month to twelve month, two shipments per month.
Second year first six month , three shipments per month
Second year sixth month to twelve month, four shipment per month
Third year to tenth year, four to five shipments per month