this particular embodiment the securing tubes 37 and 38 would be of sufficient diameter to encompass the horns 21 of the cleat in order for each tubular securing tube 37 and 38 to fully engage the cleat the underside of the tube will have a suitable cutout 39 which will allow the securing rings to fully engage the cleat legs 22 and to allow the full cooperation of shaft 31 to be reciprocated to a full depth with the locking cylinder 13 yet another embodiment of the invention is shown in fig8 9 and includes the same essential elements of the invention as previously disclosed which will include the sliding locking bar 12 and the locking cylinder 13 and the associated lock 34 along with any cable 14 necessary the cleat securing rings of this embodiment include generally round tubular solid rings 41 attached to the sliding lock bar 12 and to the locking cylinder 13 in order that each securing ring will be firmly attached thereto and will have sufficient diameter so that the ring 41 will fit around the cleat horns 21 the embodiment of fig8 9 will be operatively connected to a cleat 19 in the same manner as described for the other embodiments as described here and above the only difference being that the cleat horn securing rings are.