Abstract: A honeycomb panel having a honeycomb core interposed between two face plates, and inserts which are exposed to an opening formed through the panel. A desired member is bonded to the panel through the inserts and the face plates which are bonded together. The inserts are disposed in selected honeycomb cells of the honeycomb core when the honeycomb core is assembled with the face plates, or the inserts are inserted into the selected honeycomb cells which are open to the opening or a preliminary hole formed before the opening is cut. Alternatively, the inserts are positioned relative to the face plates before the honeycomb core members are disposed relative to the inserts. The honeycomb panel may be produced by various methods disclosed.

Abstract: A honeycomb panel having a honeycomb core interposed between two face plates, and inserts which are exposed to an opening formed through the panel. A desired member is bonded to the panel through the inserts and the face plates which are bonded together. The inserts are disposed in selected honeycomb cells of the honeycomb core when the honeycomb core is assembled with the face plates, or the inserts are inserted into the selected honeycomb cells which are open to the opening or a preliminary hole formed before the opening is cut. Alternatively, the inserts are positioned relative to the face plates before the honeycomb core members are disposed relative to the inserts. The honeycomb panel may be produced by various methods disclosed.

Abstract: An offshore structure and method of constructing same are disclosed. The offshore structure comprises a jacket assembly, a bottom tank secured to the bottom of said jacket assembly and a movable tank which is vertically slidable along said jacket assembly and which can be positioned on said bottom tank as a ballasting and storage tank. The offshore structure further includes a guide mechanism between said jacket assembly and movable tank to guide the vertical sliding of said movable tank, a frictional plate disposed on the contact surface between said bottom tank and movable tank so as to permit the two tanks to slide relative to each other in a given horizontal movement, and a buffer disposed between said jacket assembly and movable tank.