أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
Yes, it is very important to know the knots and how to solve it.
Yes it is very important.A single seconds in the sea as very precious.Having the knowledge of doing those knots can fast the job.And can save life in an instantce,especially in an emergency situation.
