I'm sorry Christos, but there's not really enough info for me to comment. I
can only guess what the boat really looks like. Usually in most boats of
that size there are two different drain plugs. One within an inch or so of
the absolute bottom of the boat. This is to drain the below deck compartment
among some other functions like maybe checking if your below deck fuel tank
has sprung a leak!
The one higher up is for draining the deck area and for washing down after
an outing. On many boats this is slightly lower than the deck because there
is a slight well at the back of the deck to "collect" the water.
Now to contradict that last one, there are more & more boats now being
designed with "self draining decks", with scuppers attached to holes at the
rear of the deck.
The measurements don't mean a lot really because unless I know the deadrise
& lots of other details, then I can't comment.
Why are you concerned? Does it look too low in the water?
Are you sure that the 30 CM holes aren't just from the outboard well?
brumer


"christos" wrote in message
.. .
bruce i dont know
i launch the boat in the water and i took following draft
fore 28 cm
aft 40 cm
boat contains 120 liters of gasoline
the strange thing is that the drain holes located at 30 cm height from
keel
and the deck is 38 cm

have you ever seen a boat with this consruction or you can say what is the
weight of the boat with the cargo

christos


"BruceM" wrote in message
...
I give up ! ! tell us?
BruceM


"christos" wrote in message
.. .
thanks all for the reply.

the boat is bought with the motor .
it has a V bottom is a planning hull
is an open center console type and the fuel tank is located in the
center
line
boat is foam filled
the console is located from bow at 2.70 meters
the center of fuel tank is located 3.30 meters from the bow and is 1.8
metrs
long by 50cm by 28 cm
50 kgs batteries is under the console
waterline lenght is 4.92 mt max width 2.03 mt
what is your estimation for imersion of the boat in the salt water

christos


"christos" wrote in message
...
18 feet boat with an outboard motor of 350 pounds at the aft end how
much
will submerged in the water
the boat weights 1600 pounds without engine.
christos