PONTOON TO KEEP EMERGENCY FACILITIES AFLOAT Russian patent published in 2021 - IPC B63B35/36 

FIELD: pontoons.
SUBSTANCE: invention relates to pontoons used to keep afloat emergency or raised vessels when they are towed to their bases. A pontoon for keeping emergency facilities afloat contains a straight-walled hull divided into drainable compartments, a system of its flooding and draining, butts for lashing and towing, necks for passing into compartments with covers, devices for slinging combining known sling-shortening and sling-aligning devices consisting of gutters formed by vertical guides with holes and installed on both sides of the hawses, rocker arms installed with the possibility of rotation over the hawses and equipped with pulleys for passage of lifting slings, guides for lifting slings with finger holes installed in front of the gutters, devices for ensuring a tight fit of the pontoon to the hull of the emergency object, made in the form of spacer stops. The pontoon is equipped with stoppers for fixing the covered lifting slings, installed together by guides on the bases placed between the rocker arms and the devices for slinging. The bases, the guides for the lifting slings and the stoppers for fixing the lifting slings are installed at an angle equal to the angle of inclination of the rocker arms.

EFFECT: improved performance of the pontoon is achieved.

1 cl, 3 dwg