So, I can understand Silhouettes 0-3 well enough, but beyond that, the examples aren't especially helpful. Mine was a cold, deprived, Dickensian childhood, and my cruel guardians never let me play on the neighborhood three-masted sailing vessels, Aegis cruisers, or star dreadnoughts. Can anyone put them in more understandable terms for me (eg houses, city blocks, stadia, Rhode Islands)?

In Star Wars, at least, I always found it helpful to imagine that the something of one silhouette, if a creature, should be able to carry something of the next lowest silhouette on its back as a rider. So, a horse is Silhouette 2, a Human is Silhouette 1, Yoda is Silhouette 0. What could a horse ride on? Maybe a whale? Whales are probably Silhouette 3. It goes up from there.

The Millennium Falcon is the best known example of a silhouette 4 object. It is officially listed at about 35 meters in length, which is about 115 feet in length. The X-wing is silhouette 3, and is officially listed at 12.5 meters in length (or 41 feet).

Silhouette 3 has been applied to objects up to about 20 meters in length, silhouette 4 is up to about 50, silhouette 5 goes up to 150-200 meters. Silhouette 6 has been applied to stuff about 200-500 meters, silhouette 7 to stuff about 800-900 meters, silhouette 8 to stuff around a kilometer to 1.5-2 kilometers, silhouette 9 has been applied to stuff about 15 kilometers in length, and silhouette 10 is even larger.

Keep in mind that silhouette also approximates height and width along with length. So an object of about 20 meters in length could be silhouette 4 if it is also very bulky. Likewise, a very long object can be a silhouette down if it is thin and narrow.

Silhouette 20 is the Death Star, if that helps at all and the Death Star is 160 kilometers wide.

Got this from a fellow on FaceBook.