METHOD (VERSIONS) AND DEVICE TO BRING VESSEL AFLOAT Russian patent published in 2012 - IPC B63C7/28 

FIELD: construction.

SUBSTANCE: bringing a vessel afloat is done with the help of hydraulic jacks, stems of which are equipped with double roller attachments, which rest against channel guides of a multisectional demountable frame with locating blocks and pontoons, which is installed under the vessel bottom. Then the vessel is moved along doubled roller attachments of hydraulic jacks for depths exceeding draught of this vessel, with the help of a towing cable or anchor chains, which are fixed to a knight of a pedestal installed in the deep part of the water area, using, accordingly, a vessel spire or a vessel windlass.

EFFECT: higher lifting forces, their even distribution along the entire vessel of a vessel, protection of a vessel bottom against damages, which provides for reliable realisation of a lifting operation and pulling of an emergency vessel into a deep part of a water area.

10 cl, 7 dwg