Year: 2009 Language: english Author: Martin A. Rhodes Publisher: Glasgow College of Nautical Studies Quality: eBook Number of pages: 408 Version: 1.0 Platform: PC (Windows) Compatibility with Windows7: yes Localization: english Crack: Not needed Description: This CD-ROM software is the first of two directed at students studying for professional merchant navy deck officer certificates of competency. Ship Stability For Deck Officers - Class 4/00 W covers the syllabus requirements for the current SQA examination and HNC level unit(s) being offered by colleges as part of the underpinning knowledge required for certification to Officer of the Watch (OOW) level (STCW 95). Those topics not highlighted are not examined in the current MCA examination, however, some may be examined at HNC level as part of the in-college unit(s) that are taught. The purpose of including the more advanced material is primarily one of giving the program a suitable ending. To only cover those topics necessary to pass the OOW level examinations would be like writing a book but missing out the last chapter! Sections 16-19 take the learner beyond the scope of the OOW level requirements to allow the learner to be able to complete a full ship load problem using the ship stability data book developed for this purpose. These final sections will be invaluable to anyone preparing themselves for the more advanced Class 2/1 Ship Stability examinations. A second CD- ROM is currently being developed for the higher level Class 2/1 candidate. I wish to express my gratitude to all at Seamanship International Ltd. for making the production of this software possible and to my colleague. Douglas McHugh, who painstakingly read and checked much of it's content. Finally; I would be pleased to receive comments on this software and any suggestions that users may care to make for its improvement. These will be seriously considered for later revised edition(s). Good luck with your studies. Martin A. Rhodes. (Lecturer - Glasgow College of Nautical Studies)

More...

A trend in recent years in the education of professional seafarers has been to reduce the time that the student actually spends in college and for the introduction of a more structured learning experience whilst the student is actually at sea. With most educational establishments there is an urgency to develop 'distance learning' based courses. This trend is likely to become more popular with students undertaking academic training courses, but one that is also setting a real challenge to lecturers, like myself. Traditional classroom teaching techniques will always have a place in the education of seafarers. However, with the growing availability of PC access on board modem ships it is envisaged that, with the aid of appropriate software, students will be more able to prepare themselves for the short periods of very intense study required of them during their college phases. This software is specifically designed for this purpose. It is my experience that many students, resulting from their lack of mathematical ability, often meet the subject of ship stability with apprehension. This is the main reason for the downfall of many students studying this topic. This program is designed to address this problem by covering the subject content in the simplest way possible and at an assumed mathematical level that is appropriate for a learner studying independently. Worked examples and self-assessment questions (SAQ's) are provided throughout for the learner to assess his her progress. At the end of each section tutorial questions are provided with solutions fully worked out. All such questions are designed to be of a type and standard that are likely to be encountered in real examinations at OOW level. It is this approach which gives this work an added advantage over most modem text books on the subject of ship stability, were a high level of mathematical ability is often assumed. It has often been the experience of many students to encounter worked examples in text books that are not sufficiently broken down to enforce proper understanding. Formulae are derived where appropriate to enhance understanding. Look through the contents of the program that follows. Those highlighted in blue must be studied for the OOW level examinations.

Contents

SECTION 1 - INTRODUCTION SECTION 2 - BASIC PRINCIPLES Introduction 2.1 Density, Mass and Volume 2.2 The Laws of Flotation 2.3 Simple box-shaped vessel calculations. Tutorial questions SECTION 3 - FORM COEFFICIENTS Introduction 3.1 Coefficient of fineness of the water-plane area (Cw) 3.2 Block Coefficient (Cb) 3.3 Midships Coefficient (Cm) 3.4 Longitudinal Prismatic Coefficient (Cp). Tutorial questions SECTION 4 - TONNES PER CENTIMETRE IMMERSION Introduction 4.1 Tonnes per centimetre immersion (TPC) 4.2 TPC formula. 4.3 Factors affecting TPC 4.4 Interpolation of hydrostatic data 4.5 Load/discharge problems Tutorial questions SECTION 5 - LOAD LINES Introduction 5.1 Factors for consideration in assigning a freeboard 5.2 Type 'A' and Type ’B’ ships 5.3 Load line dimensions 5.4 Fresh Water Allowance (FWA) 5.5 Dock Water Allowance (DWA) 5.6 Load Line calculations Tutorial questions SECTION 6 CENTRE OF GRAVITY (G) AND CENTRE OF BUOYANCY CB) Introduction 6.1 Centre of gravity 6.2 Effect of shifting a weight already on board 6.3 Effect of loading a weight 6.4 Effect of discharging a weight 6.5 Multiple weight problems 6.6 Centre of buoyancy (B) Tutorial questions SECTION 7 - TRANSVERSE STATICAL STABILITY Introduction 7.1 Transverse Statical Stability 7.2 Righting lever (GZ) 7.3 Moment of statical stability (Righting moment) 7.4 Initial Transverse Metacentre (M) 7.5 Metacentric Height (GM) 7.6 Calculating Righting Moments at small angles of heel Tutorial questions SECTION 8 - CONDITIONS OF STABILITY Introduction. 8.1 Stable condition 8.2 Neutral condition 8.3 Unstable condition and angle of loll Tutorial questions SECTION 9 - INITIAL TRANSVERSE METACENTRE Introduction 9.1 Initial Transverse Metacentre explained 9.2 Calculating KM for box-shaped vessels 9.3 Use of the metacentric diagram 9.4 To determine the final KG required to complete loading with a required GM 9.5 Factors affecting KM Tutorial questions SECTION 10 - FREE SURFACE EFFECT Introduction 10.1 Free surface effect and transverse statical stability 10.2 To calculate the effect of free surface in a rectangular shaped tank 10.3 Free surface moments 10.4 Representation of free surface data in ship's tank sounding/ullage tables 10.5 Factors influencing free surface effect Tutorial questions SECTION 11 - CURVES OF STATICAL STABILITY (GZ CURVES’) Introduction 11.1 Calculating GZ values 11.2 Procedure for constructing a curve of statical stability 11.3 Information available from a curve of statical stability 11.4 Curves of statical stability for stiff and tender ships Tutorial questions SECTION 12 LIST Introduction 12.1 Calculating list caused by a transverse shift of weight - the basic list triangle 12.2 Calculating list caused by a transverse and vertical shift of weight - ship initially upright 12.3 Calculating the list due to a single weight being loaded or discharged 12.4 Shifting a weight already on board to bring a listed ship upright 12.5 Multiple weight problems - ship initially upright 12.6 Multiple weight problems - ship initially listed 12.7 Loading weights about the centre-line to complete upright 12.8 List and free surface effect Tutorial questions SECTION 13 - CURVES OF STATICAL STABILITY FOR VARYING CONDITIONS STABILITY Introduction 13.1 Curve of statical stability for a ship in a stable condition 13.2 Curve of statical stability for a ship in a neutral condition of stability 13.3 Curve of statical stability for a ship in an unstable condition 13.4 Curve of statical stability for a ship that is listed 13.5 Correcting an angle of loll Tutorial questions SECTION 14 - SUSPENDED WEIGHTS Introduction 14.1 Effect on KG of lifting a weight using ship’s gear 14.2 Loading a weight using ship’s lifting gear 14.3 To calculate the maximum permissible KG required prior to loading or discharging a weight to ensure that a certain list limit is not exceeded Tutorial questions SECTION 15 - INTRODUCTION TO TRIM Introduction 15.1 Terms relating to ship length 15.2 Draught marks and reading the draught 15.3 Trim 15.4 Change of trim 15.5 Moment to change trim by one centimetre (MCTC) 15.6 Formula for calculating MCTC 15.7 Longitudinal centre of flotation (LCF or F) 15.8 Calculating the final draughts when a weight is shifted 15.9 The effect of loading and discharging weights 15.10 Multiple weight problems 15.11 Weight to shift to reduce the trim by a specified amount 15.12 Weight to load to bring a ship to an even keel 15.13 Weight to transfer to reduce the deepest draught by specified amount Tutorial questions SECTION 16 - TRIM USING HYDROSTATIC DATA Introduction 16.1 True mean draught - displacement when out of trim 16.2 Calculating the true mean draught 16.3 Trim calculations using hydrostatic data 16.4 Trim by consideration of the relative positions of the LCB and LCG Tutorial questions SECTION 17 INCLINING EXPERIMENT Introduction 17.1 Calculating the KG as inclined 17.2 Calculating the light ship KG and displacement 17.3 Precautions prior to conducting the experiment 17.4 Precautions to ensure accuracy of the calculation Tutorial questions SECTION 18 - ASSESSING COMPLIANCE OF A SHIP'S LOADED CONDITION WITH IMP CRITERIA Introduction 18.1 Simpson's First Rule 18.2 Simpson's Second Rule 18.3 Intact stability criteria for all ships (IMO) 18.4 Dynamical stability - the relevance of area under the curve of statitcal stability 18.5 Unreliability in practice of statical stability data Tutorial questions SECTION 19 - PRACTICAL SHIP LOADING PROBLEMS Introduction 19.1 Introduction to loading sheet data 19.2 Practical ship load problem Tutorial questions

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^{®}05-Авг-2013 06:40## Ship Stability OOW training program

Language: english

Author: Martin A. Rhodes

Publisher: Glasgow College of Nautical Studies

Quality: eBook

Number of pages: 408

Version: 1.0

Platform: PC (Windows)

Compatibility with Windows7: yes

Localization: english

Crack: Not needed

Description:

This CD-ROM software is the first of two directed at students studying for professional merchant navy deck officer certificates of competency. Ship Stability For Deck Officers - Class 4/00 W covers the syllabus requirements for the current SQA examination and HNC level unit(s) being offered by colleges as part of the underpinning knowledge required for certification to Officer of the Watch (OOW) level (STCW 95).

Those topics not highlighted are not examined in the current MCA examination, however, some may be examined at HNC level as part of the in-college unit(s) that are taught.

The purpose of including the more advanced material is primarily one of giving the program a suitable ending. To only cover those topics necessary to pass the OOW level examinations would be like writing a book but missing out the last chapter! Sections 16-19 take the learner beyond the scope of the OOW level requirements to allow the learner to be able to complete a full ship load problem using the ship stability data book developed for this purpose. These final sections will be invaluable to anyone preparing themselves for the more advanced Class 2/1 Ship Stability examinations. A second CD- ROM is currently being developed for the higher level Class 2/1 candidate.

I wish to express my gratitude to all at Seamanship International Ltd. for making the production of this software possible and to my colleague. Douglas McHugh, who painstakingly read and checked much of it's content. Finally; I would be pleased to receive comments on this software and any suggestions that users may care to make for its improvement. These will be seriously considered for later revised edition(s). Good luck with your studies. Martin A. Rhodes. (Lecturer - Glasgow College of Nautical Studies)

## More...

A trend in recent years in the education of professionalseafarers has been to reduce the time that the student actually

spends in college and for the introduction of a more structured

learning experience whilst the student is actually at sea. With

most educational establishments there is an urgency to

develop 'distance learning' based courses. This trend is likely

to become more popular with students undertaking academic

training courses, but one that is also setting a real challenge to

lecturers, like myself.

Traditional classroom teaching techniques will always have a

place in the education of seafarers. However, with the

growing availability of PC access on board modem ships it is

envisaged that, with the aid of appropriate software, students

will be more able to prepare themselves for the short periods

of very intense study required of them during their college

phases. This software is specifically designed for this purpose.

It is my experience that many students, resulting from their

lack of mathematical ability, often meet the subject of ship

stability with apprehension. This is the main reason for the

downfall of many students studying this topic. This program is

designed to address this problem by covering the subject

content in the simplest way possible and at an assumed

mathematical level that is appropriate for a learner studying

independently. Worked examples and self-assessment

questions (SAQ's) are provided throughout for the learner to

assess his her progress. At the end of each section tutorial

questions are provided with solutions fully worked out. All

such questions are designed to be of a type and standard that

are likely to be encountered in real examinations at OOW

level.

It is this approach which gives this work an added advantage

over most modem text books on the subject of ship stability,

were a high level of mathematical ability is often assumed. It

has often been the experience of many students to encounter

worked examples in text books that are not sufficiently broken

down to enforce proper understanding. Formulae are derived

where appropriate to enhance understanding.

Look through the contents of the program that follows.

Those highlighted in blue must be studied for the OOW level

examinations.

## Contents

SECTION 1 - INTRODUCTIONSECTION 2 - BASIC PRINCIPLES

Introduction

2.1 Density, Mass and Volume

2.2 The Laws of Flotation

2.3 Simple box-shaped vessel calculations.

Tutorial questions

SECTION 3 - FORM COEFFICIENTS

Introduction

3.1 Coefficient of fineness of the water-plane area (Cw)

3.2 Block Coefficient (Cb)

3.3 Midships Coefficient (Cm)

3.4 Longitudinal Prismatic Coefficient (Cp).

Tutorial questions

SECTION 4 - TONNES PER CENTIMETRE IMMERSION

Introduction

4.1 Tonnes per centimetre immersion (TPC)

4.2 TPC formula.

4.3 Factors affecting TPC

4.4 Interpolation of hydrostatic data

4.5 Load/discharge problems

Tutorial questions

SECTION 5 - LOAD LINES

Introduction

5.1 Factors for consideration in assigning a freeboard

5.2 Type 'A' and Type ’B’ ships

5.3 Load line dimensions

5.4 Fresh Water Allowance (FWA)

5.5 Dock Water Allowance (DWA)

5.6 Load Line calculations

Tutorial questions

SECTION 6 CENTRE OF GRAVITY (G) AND

CENTRE OF BUOYANCY CB)

Introduction

6.1 Centre of gravity

6.2 Effect of shifting a weight already on board

6.3 Effect of loading a weight

6.4 Effect of discharging a weight

6.5 Multiple weight problems

6.6 Centre of buoyancy (B)

Tutorial questions

SECTION 7 - TRANSVERSE STATICAL STABILITY

Introduction

7.1 Transverse Statical Stability

7.2 Righting lever (GZ)

7.3 Moment of statical stability (Righting moment)

7.4 Initial Transverse Metacentre (M)

7.5 Metacentric Height (GM)

7.6 Calculating Righting Moments at small angles of heel

Tutorial questions

SECTION 8 - CONDITIONS OF STABILITY

Introduction.

8.1 Stable condition

8.2 Neutral condition

8.3 Unstable condition and angle of loll

Tutorial questions

SECTION 9 - INITIAL TRANSVERSE METACENTRE

Introduction

9.1 Initial Transverse Metacentre explained

9.2 Calculating KM for box-shaped vessels

9.3 Use of the metacentric diagram

9.4 To determine the final KG required to complete loading

with a required GM

9.5 Factors affecting KM

Tutorial questions

SECTION 10 - FREE SURFACE EFFECT

Introduction

10.1 Free surface effect and transverse statical stability

10.2 To calculate the effect of free surface in a rectangular

shaped tank

10.3 Free surface moments

10.4 Representation of free surface data in ship's tank

sounding/ullage tables

10.5 Factors influencing free surface effect

Tutorial questions

SECTION 11 - CURVES OF STATICAL STABILITY

(GZ CURVES’)

Introduction

11.1 Calculating GZ values

11.2 Procedure for constructing a curve of statical stability

11.3 Information available from a curve of statical stability

11.4 Curves of statical stability for stiff and tender ships

Tutorial questions

SECTION 12 LIST

Introduction

12.1 Calculating list caused by a transverse shift of weight -

the basic list triangle

12.2 Calculating list caused by a transverse and vertical shift of

weight - ship initially upright

12.3 Calculating the list due to a single weight being loaded or

discharged

12.4 Shifting a weight already on board to bring a listed ship

upright

12.5 Multiple weight problems - ship initially upright

12.6 Multiple weight problems - ship initially listed

12.7 Loading weights about the centre-line to complete upright

12.8 List and free surface effect

Tutorial questions

SECTION 13 - CURVES OF STATICAL STABILITY

FOR VARYING CONDITIONS STABILITY

Introduction

13.1 Curve of statical stability for a ship in a stable condition

13.2 Curve of statical stability for a ship in a neutral condition

of stability

13.3 Curve of statical stability for a ship in an unstable condition

13.4 Curve of statical stability for a ship that is listed

13.5 Correcting an angle of loll

Tutorial questions

SECTION 14 - SUSPENDED WEIGHTS

Introduction

14.1 Effect on KG of lifting a weight using ship’s gear

14.2 Loading a weight using ship’s lifting gear

14.3 To calculate the maximum permissible KG required prior

to loading or discharging a weight to ensure that a certain

list limit is not exceeded

Tutorial questions

SECTION 15 - INTRODUCTION TO TRIM

Introduction

15.1 Terms relating to ship length

15.2 Draught marks and reading the draught

15.3 Trim

15.4 Change of trim

15.5 Moment to change trim by one centimetre (MCTC)

15.6 Formula for calculating MCTC

15.7 Longitudinal centre of flotation (LCF or F)

15.8 Calculating the final draughts when a weight is shifted

15.9 The effect of loading and discharging weights

15.10 Multiple weight problems

15.11 Weight to shift to reduce the trim by a specified amount

15.12 Weight to load to bring a ship to an even keel

15.13 Weight to transfer to reduce the deepest draught by

specified amount

Tutorial questions

SECTION 16 - TRIM USING HYDROSTATIC DATA

Introduction

16.1 True mean draught - displacement when out of trim

16.2 Calculating the true mean draught

16.3 Trim calculations using hydrostatic data

16.4 Trim by consideration of the relative positions of the LCB and

LCG

Tutorial questions

SECTION 17 INCLINING EXPERIMENT

Introduction

17.1 Calculating the KG as inclined

17.2 Calculating the light ship KG and displacement

17.3 Precautions prior to conducting the experiment

17.4 Precautions to ensure accuracy of the calculation

Tutorial questions

SECTION 18 - ASSESSING COMPLIANCE OF A SHIP'S

LOADED CONDITION WITH IMP CRITERIA

Introduction

18.1 Simpson's First Rule

18.2 Simpson's Second Rule

18.3 Intact stability criteria for all ships (IMO)

18.4 Dynamical stability - the relevance of area under the curve

of statitcal stability

18.5 Unreliability in practice of statical stability data

Tutorial questions

SECTION 19 - PRACTICAL SHIP LOADING PROBLEMS

Introduction

19.1 Introduction to loading sheet data

19.2 Practical ship load problem

Tutorial questions