Call or put options on an index such as the Standard and Poor's 500 Index or the FTSE 100.

A single turn of rope when a rope is coiled down.

A halo consisting of a faint white circle passing through the Sun and running parallel to the horizon for as much as 360

The wind speed with 50 percent probability of occurring.

A curve showing the variation of temperature with height in the free air. See lapse rate.

A salt or ester of carbonic acid.

The part of a rotating element that counteracts any inherent thrust developed by the impellers.

In the US, the document which the founders of a corporation submit to the relevant state for.

Condition of a sailing ship when all sails have been taken down in a severe storm, very often a hazardous undertaking if there is a high sea running.

Same as marine rainbow.

Said of an object that is secured to another; attached, fixed, secured.

The bearing of an object after magnetic variation has been considered, but without compensation for magnetic deviation.

A unit or measure of electricity supply or consumption of 1,000 Watts over the period of one hour; equivalent to 3,412 Btu.

Precipitation caused by the ascent of moist air over an orographic barrier such as a Mountain range.

The date on which a Bill of Exchange or Letter of Credit becomes due for payment.

International Marine Contractors Association

The sale (purchase) of a near month call option (put option) and the simultaneous purchase (sale) of.

An investor who believes share prices are going to fall. He therefore sells shares, sometimes.

Six feet. Comes from the Dutch word "fadom" which was the distance between fingertips of outstretched hands.A unit of measurement relating to the depth of water or to the length of line or cable; one fathom is 6 feet or 1.83 meters

The decomposition of organic material to alcohol, methane, etc., by organisms, such as yeast or bacteria, usually in the absence of oxygen.