I seize the opportunity to illustrate the similarities between the “correctly dressed” forms of those two eye-knots : the reversed Tugboat A loop and the Samisen 4 bowline ( shown at (1)). As one might have expected, the “wrongly dressed” forms of those eye-knots suffer from the same problem, to the same degree : their unbalanced nipping structures may “open up” and disintegrate, if their eyelegs are loaded in a certain uneven and unfavourable way.
I had noticed that this deceivingly compact and good-looking Samisen 4 bowline :
, but I had not realized, till now, that ( as I should had expected…), the cause of the problem is the similarity of its form to the form of the reversed Tugboat A bowline ( which also suffers from the same problem ).