CORK INSTITUTE OF TECHNOLOGY
INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ
Autumn Examinations 2016
School:
National Maritime College of Ireland
Programme Title:
Bachelor of Science in Nautical Science
Higher Certificate in Science in Nautical Studies
Officer in charge of a Navigational Watch on a vessel of
more than 500 gross tonnage
Programme Code:
SNASC_ 7 Y3 and SNASC_6 Y3, OOW+
Module Code:
NAUT7003
Module Title: Meteorology
External Examiner(s):
Capt. H Menezes, Ms D Lane, Capt. S Begley
Internal Examiner(s):
Capt. W. Kavanagh.
Instructions:
Answer 4 questions
Note:
For DoT exemption a pass mark of 50% is required.
Duration:
2 Hours
Sitting:
Autumn Repeat 2016.
Requirements for this examination: Exam Answer Book.
Note to Candidates: Please check the Programme Title and the Module Title to ensure that you are attempting
the correct examination. If in doubt please contact an Invigilator.
1.
[a] Sketch and label a whirling psychrometer
[b] How does a whirling psychrometer work,
[c] What precautions must be taken when using it?
[d] Of what use is a whirling psychrometer in a hold?
2.
[a] Illustrate and describe
(6)
(5)
(10)
(4)
i. Anabatic winds and
(10)
ii. Katabatic winds.
(10)
[b] Give details of how Katabatic effects can occur during the night and during the day.
(5)
3.
4.
5.
[a] Explain what is meant by the term “air mass”
(7)
[b] Explain what is meant by the term “Source Region”
(7)
[c] Explain how air masses are named
(4)
[d] Explain how the properties of an air mass may change
(7)
[a] State Buy’s Ballots Law.
(4)
[b] Draw a labelled diagram showing how Buys Ballots Law may be used at sea.
(6)
[c] Define: [i]
(9)
Veering,
[ii]
Backing
[iii]
Variable
[d] What is the difference between pressure gradient and pressure tendency?
(6)
[a]
[b]
(7)
i.
ii.
iii.
[c]
What is an adiabatic process ?
Define:
the dry adiabatic lapse rate,
the saturated adiabatic lapse rate and
the environment lapse rate.
Draw a labelled graph showing the above lapse rates.
(12)
(6)