SUNDAY. Ought to be a day of rest at sea as well as on shore, when religious services might generally be performed. Though called the negro's holiday, it often brings but little cessation from work in some merchantmen; they sail on a Sunday, not because of exigency, but because it is otherwise a leisure day, and thereby gained to the owners.
SUN-FISH. The Orthagoriscus mola, a whimsical-looking creature, like the head of a large fish severed from its body. Also, a name in the south for the basking shark, from its habit of lying in the sunshine.
SUNKEN ROCK. That which lies beneath the surface of the sea, and is dangerous to navigation.
SUNK LAND. Shallows and swamps.
SUN-STAR. The Solaster papposus, one of the largest and handsomest of our radiated star-fishes.
SUPERANNUATED. Applied to such as have permission to retire from the service on a stated pension, on account of age or infirmity.
SUPER-CARGO. A person charged with the accounts and disposal of the cargo, and all other commercial affairs in the merchant-ship in which he sails.
SUPER-HEATED. Said of steam, the heat of which has been raised after being generated.
SUPER-HEATER. A contrivance for increasing the temperature of the steam to the extent that it would lose on its way from the boiler, until exhausted from the cylinder.
SUPERIOR CONJUNCTION. When an inferior planet is situated in the same longitude as the sun, and has that luminary between it and the earth, it is said to be in superior conjunction.