Ship Construction
Student Name:
Ship Construction
2nd Exam. / April 2015
Exam Time: 30 Minutes
Answer 4 Questions Only.
1st Question
a) Normally, how many draft marks are printed on the hull of the
ocean going commercial ships, and at what locations on the
hull?
b) Give the following draft marks readings as illustrated
below?
2nd Question
a) Illustrate by a sketch the LOAD LINE PLIMSOL MARK, &
DECK-LINE as usually marked on ships hull showing the main
dimensions on each?
b) Define the term FREEBOARD?c) What are the main 2 purposes of
keeping a freeboard for any ship?
3rd Question
A loaded ship arrived to Aqaba port, and having the draft marks
readings in meters at both Port and Stbd sides at perpendiculars
and mid-ship as follows:
Port side ford
Port Side Mid
Port Side Aft
10.00
10.10
10.04Stbd Side ford
Stbd Side Mid
Stbd Side Aft
10.00
10.10
10.04a) Calculate the ships mean forward draft.
b) Calculate the ships mean mid draft.
c) Calculate the ships mean aft draft.
d) Calculate the ships mean of mean draft.
e) Calculate the hogging or sagging that the ship is
performing.
4th question
a) Briefly, explain the main 2 purposes of the Rudder for the
ship?b) Explain the theory of Rudder with simple understanding
sketches?c) The main 3 common types of Ships Rudders are simply
sketched below; name them?
d) In all the above 3 sketches, what components of the rudder
are 1 & 2 represent?
5th Question
a) State the 3 types of keel that used in commercial ships??
b) In below sketch, indicate what type of keel the drawing
represents??
c) Write the names of structure components shown by arrows??
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