Many students worry that they do not have the mathematical ability for ship stability calculations. This publication addresses this problem by covering the subject in the simplest way possible at a level appropriate for a learner studying either independently or at college. Worked examples and self-assessment questions are provided throughout with tutorial questions at the end of each section. All questions are of a type and standard that are likely to be encountered in real examinations utilising a full set of stability data supplied in the pocket book. Read more
M**T
An excellent stability course, but has a few errors (noted in review)
As my techer has a reputation for being hard, I decided to buy this book so that I could learn ahead of time on my own while I was out at sea.Am I ever happy that this was the book I bought! Concepts that had always been vague or confusing to me yet that form the base of stability (the Archamedes principle, for example) are clearly explained in a fashion that can be easily understood by nearly anybody. For those who have also taken a basic mecanical physics class and have an idea of what a moment is, it gets even easier (if you don't, don't worry: the author briefly goes over what it is and then skips to the practicals).The only downside is that for a study guide, there are quite a few mistakes. By my count, there are about 7 (of which I have informed Witherby Seamanship). Perhaps someone with better experience in stability will find more. However, they are rather obvious. In case someone does buy the book and is wondering, here are the ones I found:p. 76: on the bottom right of the page, the formula should be GGv= (w x d) / (W - w), and not (W+w)P. 109: The angle of Loll is mentioned as being dangerous, yet is not explained. A quick google search will explain it, but when on a ship with no internet, it's rather hard to find.P. 121: In the problem explanation, the weight is written as being 250t, yet in the problem resolution, the author inserts 225t in his equations.P. 213: 12.4) GGv=(400x4.6) / (12640 - 400), not (12640 + 400)p. 215: 12.6) the answer should be 8.1° to port, no STBDp. 294: 15.7) the final answer for the aft trim should be 5.164, not 5.250 (simply do that calculations with the numbers written in the resolution, they don't add up to the sum written)p. 301: 15.12: the answer should be 4.4 CM by STERN, not headIt is possible that I mayself have made a mistake (as I said, I learned everything about stability from this book), but I believe my corrections to be exact. Besides, a few accidental errors like this are nothing when compared to the excellent education I recieved from this book. I'd recommened it to anybody having a bit of trouble with stability or those who simply want to get ahead.
T**R
Superb, but needs an addendum
This book is really good, and without even attending college I was able to work through it and get to MCA OOW standards. The only negative observation is that there a few niggling errors in the text and answers, which an addendum sheet would address and stop self studying students going around in circles trying to understand where they may have gone wrong ...Page 29 ... Second sentence, should be Cp, not Cb.Page 77 ... GGv = w x d / W - w. Not W+w as shown ... This is a discharging weight problem and the book then gets it right on page 86Page 80 ... Two typos in the equation and table (loading means + moments on line 3, and displacement in top equation has an extra 8).Page 86 ... Second discharge Kg should be 5.36 as per question (not 5.39)Page 119 ... Question states 250 tonnes of cargo to load, but worked example uses 225tonnes.Page 169 ... Table and plot are for KN values, but y axis of graph is incorrectly labeled GZ (m).Page 204 ... Solution b second divisor should be 12 , not 17.Page 226 ... Graph pilot is inaccurate ... GZ is zero at the angle of loll; loll shown on graph has a GZ of .02mPages 286 and 287 ... The depth at the bar should be a minimum of 9.5m, not a maximum of 9.5m. (If it was a max depth of x, then you need also to know the minimum to then calculate minimum clearance).Page 294 ... Trim figure aft should be subtracted (as shown) to give a final aft trim of 5.164m, not 5.250m as stated in the solution.Page 314 ... The example does not follow from the lesson. SAQ 16.3 should be moved here.Page 322 ... The worked example (SAQ 16.3) should tell you to use LCF moments, not AP moments (which have just been covered).Overall ... Buy this book! It is very good. But watch out for the little tests above ... :-)
S**N
A good, clear book
A very clear, helpful book.Some of the terminology is different to what my college lecturer used, but a little bit of reading soon sorts that outCertainly a good read for Cadets
W**M
Ship Stability OOW
The delievery was very efficient and the quality upon receipt was also of a high standard. I received the goods very early and overall i am very satisfied indeed.
A**R
Five Stars
Lovely illustration good study book
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