The half cross sectional areas (square metres) defining the underwater hull of a ship (that is the area to one side of the centreline plane) at stations 10 metres apart along the length of the ship starting at the bow, are:
0.0, 19.4, 45.7, 73.6, 94.4, 104.1, 97.1, 76.4, 48.5, 23.5 and 2.8 Calculate, using Simpson's 1, 4, 1 Rule for approximate integration: 1. the volume of displacement between stations 1 and 11.
2. the distance of the longitudinal centre of buoyancy aft of station 6 (that is amidships).
• QUESTION 2
Discuss the ship design process and outline the main perfotmance characteris-tics to be considered.
• QUESTION 3
Discuss how you would go about finding the longitudinal bending moment amidships of a ship:
1. In still water. 2. In waves using a standard wave of length equal to that of the ship. What do you understand by the terms "hogging" and "sagging" in relation to longitudinal strength?
• QUESTION 4
Discuss the impact computers have made on the way ships are designed, produced and operated.
For candidates taking the Diploma option, a Tutor-Marked Assignment must be completed for each core module. There is a minimum pass mark for each assignment and candidates will be expected to reach this minimum standard. Collectively, the assignments represent a possible 40% of the candidatet final mark.
Document Preview: DIPLOMA IN
MARINE SURVEYING
2012 / 2013
MODULE 4
Naval Architecture for Surveyors
AUTHOR
Eric Tupper
An Honorary Vice-President and
Fellow of the Royal Institution of
Naval Architects (RINA),
Member of Royal Corps of
Naval Constructors (RCNC), UK
Lloyd's and the Lloyd's crest are the registered trademarks of the society incorporated by the Lloyd's Act 1871 by the name of ‘Lloyd's’CONTENTS
Page No.
GENERAL INTRODUCTION 5
1. THE BASICS 7
1.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XXXXXXXXXX7
1.2 Buoyancy and Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . XXXXXXXXXX7
1.3 Defining the Ship Geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . XXXXXXXXXX8
1.3.1 Defining the Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XXXXXXXXXX9
1.3.2 Defining the Transverse Section . . . . . . . . . . . . . . . . . . XXXXXXXXXX10
1.3.3 Coefficients of Fineness . . . . . . . . . . . . . . . . . . . . . . . . . XXXXXXXXXX11
1.4 Areas and Volumes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XXXXXXXXXX13
1.5 Moments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XXXXXXXXXX14
1.5.1 Second Moments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XXXXXXXXXX15
1.5.2 Moments of Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . XXXXXXXXXX15
1.6 Approximate Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XXXXXXXXXX16
1.7 Spreadsheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XXXXXXXXXX20
1.8 Centres of Gravity and Buoyancy . . . . . . . . . . . . . . . . . . . . . . . XXXXXXXXXX22
1.8.1 Centre of Gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XXXXXXXXXX22
1.8.2 Centre of Buoyancy . . . . . . . ....