根据以下信用证条款回答40-42题：
Applicant：Peter Flowers Corp., Netherlands
231 Merry Street Amsterdam, Netherlands
Beneficiary：May Flowers Corp., China
18 Chung Shan Road, Shanghai, China
Documents required：
Full set of clean on board ocean bills of lading made out to order and blank endorsed ，marked “freight prepaid”,notify applicant.
按提单收货人分类，该提单属于哪一种类？（ ）