METHOD OF REDUCING RESISTANCE TO REMODELED SHIP

• Main Authors: SHIRAKI AZUMA, NAKANISHI KOUICHI
• Format: Patent
• Language: English
• Published: 06.08.1985
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; EQUIPMENT FOR SHIPPING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PERFORMING OPERATIONS; RELATED EQUIPMENT; SHIPS OR OTHER WATERBORNE VESSELS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

PURPOSE:To reduce the resistance to the propulsion of an entire remodeled ship in which an old hull is coupled with a new hull of larger width, by causing water to flow from the hull width difference point of the remodeled ship toward its stern to prevent a water flow from being involved at the hull width difference point. CONSTITUTION:An old hull 1 containing an engine room is coupled with a new hull 2 containing a hold and having a larger width than the old hull, in such a manner that width difference sections 4 are formed at the joint 3 between both the hulls 1, 2. Plural ejection ports 5 are provided in the rear end of the new hull 2 at the width difference sections 4 to jet out water to cause water flows toward the stern to prevent vortexes from being produced at the width difference sections 4. As a result, the resistance to the propulsion of an entire remodeled ship is reduced.