Limited Master Credential. The Limited Master Credential is the equivalent of the OUPV Limited License, with the important distinction that the operator is licensed for boats that have passed a Coast Guard Inspection and have an inspection sticker on display. This license caps at 100 Gross Tons.
Spider. A spider is a software program that travels the Web (hence the name spider), locating and indexing websites for search engines.
There are over 40,000 species of spiders and 109 recorded families of spiders. Spiders are arachnids with eight legs. There's a little, rather interesting story below, about why they are called Arachnids.