In ideal world we have to cope with natural
disasters and technical dangers only. But in real
world we have to cope with people’s lack of
knowledge and experiences, tiredness and sickness,
which end up with misinterpretation of facts or
overload. But we also have to cope with illegal
activities, including trafficking of people, weapon and
drags and even including acts of terrorism against
high value vessels, passengers, seaport’s
infrastructure and citizens of seaports. There are a lot
of evidences of use small boats for attacking vessels
on the open sea and in seaports, including suicide
attacks to cause many casualties and destroy port’s
infrastructure.