This book is for young readers. The photo size is misleading. Actual page with text is 5 x 7 (like a small picture frame size. ) Nice first step in Navy Ships, but no real detail - no diagrams, no sub-layer photographs, nothing from the insides of the ship, just arial shots of the ships at sea. No labels as to where the gun tanks are, where is the landing area on aircraft carrier, etc. You get the picture. So, this book is nice for young readers. Possibly Junior High School students, but not advanced enough for High School or Adults. Photos are in black and white. Very basic. Good first step.