Penn-Plax Aquarium Decoration

about the size of this ornament. Unless you didn't make through the third grade, I'm guessing everyone should know how to use a ruler. The dimensions for this ship are in the description. Don't pay any attention to the negative reviews, this ornament is top notch and my smaller fish have no problems swimming through the hole on this ship. And it makes an excellent hiding place for fish too if placed correctly in the your tank. I own the larger version of this ship too but I like this one better, the brown color looks more realistic because it simulates rusting. In fact, I like it so much I may purchase a second one to have as a back up for years to come.