Hi guys,
I thought I'd share my experience on this forum since other opinions helped me throughout my preparation massively. I had my test today and the position I went for was UGAS (marine engineer) which I passed. For clarification the score I needed was 80/120.
With much controversy regarding the how 2 become series, I believe this book (navy version) helped massively with timing and the type of questions you'll face. (Not so much mechanical comprehension). I fell like the book was harder in places such as reasoning and literacy, however this proved an advantage when facing the real thing.
Another book, which I fully recommend is - Royal Navy RT test 2016-17. This book was the most similar to the real test and provides 4 full tests!
Breakdown:
Reasoning - swot up on psychometric testing in general, for shapes - look for symmetry, rotation and number of objects. For number patterns, look to see if there are two patterns within the numbers given. I.e 1,3,2,6,3 - next is 9.
Literacy - can't say much, just use practice examples to get used to the question layouts.
Numeracy - I found this was the easiest for me (only if you prepare)!!! 16 mins is plenty to solve problems such as addition (long including decimals). Swot up on fractions (+\*-). Fractions to decimals, decimals to fractions and percentages. There was an odd number of algebra (basic). Geometry, especially degrees rotation. Also decimal places and significant figures (rounding in general)
Finally mechanical comprehension - unusually for me, the hardest. I think this was due to the fact that the questions take more working out (especially in 10 minutes). Swot up on electrical symbols, simple circuits, pulleys, gears, leavers and some mechanical advantage problems,
Make sure you prepare, I prepared for 2 months doing multiple problems. One of the most important things to do is excersise your brain with any problems you can find. Anything helps. Make sure you time yourself! I brought a watch, and definitely needed it! Oh and be prepared to wait about an hour for your results.