The musket replaced the arquebus and was replaced in the 18th century with the rifle, which closely resembles the rifle we would recognise today. The musket was made up of the 'lock, stock and barrel' and was used to fire small balls of lead. It was difficult to fire a musket accurately beyond fifty metres. A musket would have to be reloaded after each shot. An experienced musketeer could potentially fire four rounds per minute. The loading process was fiddly and an organised army would often have a number of soldiers loading whilst their partners did the firing.
" I snatched a cutlass from the pile, and some one, at the same time snatching another, "
A cutlass is so called because it was shorter than a full length sword and consequently 'cut less'. The use of cutlasses by pirates is well documented, and favoured by sailors because it was strong enough to cut through rope, canvass and even wood, but short enough to use at close range such as in onboard combat or below the decks. This rather colourful website (click here) details many of the other kinds of weapons used by pirates.