bsc 2nd exam-april 2015.doc
TRANSCRIPT
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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