Side Boys

Side boys are a part of the quarterdeck ceremonies when an important person or Officer comes on board or leaves a ship. Large ships have side boys detailed to the quarterdeck from 0800 to sunset. When the side is piped by the BMOW, from two to eight side boys, depending on the rank of the Officer, will form a passageway at the gangway. They salute on the first note of the pipe and finish together on the last note. 

In the days of sail, it was not uncommon for the Commanding Officers of ships sailing in convoy to convene aboard the flagship for conferences. It was also not uncommon for COs to invite each other to dine aboard their vessels. Unfortunately, there was no easy way to bring visitors on and off a ship while underway. And there was no dignified may for a high ranking officer to scurry up or down a rope ladder hanging down the side of a ship. 

Often the boatswain's chair, a rope and wood sling, would be used to hoist the guest onto and off the ship. The Boatswain's Mate would control the heaving by blowing the appropriate commands with a whistle known as a Boatswain's Pipe. The number of "strong backs" needed to bring the visitor aboard depended upon the size of the "load" being hoisted. Somewhere along the line, it was noted that the more senior the visitor's rank, the more Sailors were needed to "man the side." Over time, the need to hoist visitors onto and off of Navy ships went away, but the custom of mustering the Sideboys and piping distinquished visitors aboard ship remains.

Knot

The term knot, or nautical mile, is used world-wide to denote one's speed through water. Today, we measure knots with electronic devices, but 200 years ago such devices were unknown. 

Ingenious marines devised a speed measuring device both easy to use and reliable, the "log line." From this method we get the term "Knot." The log line was a length of twine marked at 47.33-foot intervals by colored knots. At one end a log chip was fastened. It was shaped like the sector of a circle and weighted at the rounded end with lead. When thrown over the stern, it would float pointing upward and would remain relatively stationary. The log line was allowed to run free over the side for 28 seconds and then hauled on board. Knots which had passed over the side were counted. In this way, the ships speed was measured.