Many vertical reinforced bars need to be connected in architecture construction,especially in shiplock engineering on account of its particularity in struction.

This paper makes a preliminary study on such structures of back-stayed elastic thin wall as asymmetric steel piles and diaphragm walls applied in shiplock engineering,as well as on the quality faults,preventive measures,safety monitoring and quality testing of the structures.

The supervision organization, supervision procedure and supervision practice which took quality control as the heart for Dayuandu Junction shiplock engineering are briefly introduced.

Design of air conditioning system for ocean workboat;

Design of underwater pump davit for deep water dredging workboat;

Due to special features of workboat, their afloat condition adjustment is very important.

Engineering ship maintenance decision support system is needed in order to secure the safety in the process of engineering ship operation.

In this paper, the analysis and research of the lines design feature for ocean engineering ships, especially for tug, salvage and standby ship, that are in demand in recent market, are carried out.

This paper mainly discusses the lengthening alteration of beaching wedged chassis originally designed for slipping of caissons for repairing large engineering ships.