"I'M NO PROPELLERHEAD..." Text hints toward lifeboats, visible from exterior walkway on deck 3. Each lifeboat is numbered. There are six lifeboats with two propellers. These are numbered 11, 12, 13, 14, 15, and 16. (Odd-numbered lifeboats are on one side of the ship; even-numbered lifeboats are on the other side of the ship.) Photo of two lifeboats being deployed: http://www.flickr.com/photos/baltimike/5344015172/ Fill in the blanks with those numbers in sequence, do the arithmetic as shown, and then convert those numbers to letters (1=A, 2=B, 3=C, ..., 26=Z). 11 + 9 = 20 = T 12 - 7 = 5 = E 13 + 1 = 14 = N 14 - 10 = 4 = D 15 - 10 = 5 = E 16 + 2 = 18 = R Answer: TENDER (what a lifeboat is called when being used to ferry passengers between ship and shore)