"Man overboard." (often attached to the man overboard pole on boats). With a sinister hoist, the semaphore flag.
The Blue Peter. In harbor: All persons should report on board as the vessel is about to proceed to sea. At sea: It may be used by fishing vessels to mean: "My nets have come fast upon an obstructio…
"My vessel is 'healthy' and I request free pratique."
"I am operating astern propulsion." With one or more numerals, speed in knots
"Keep clear of me; I am engaged in pair trawling." With four numerals, local time. (The first two denote hours and the rest minutes.)
"You are running into danger."
"I require medical assistance."
"I am dragging my anchor."
A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element.
Alchemical symbol for water.
Alchemical symbol for fire.
Alchemical symbol for silver
Alchemical symbol for iron and the planet Mars.
Alchemical symbol for bismuth.
The alchemical symbol for platinum was made by joining the symbols of silver and gold.
Anarchy has more than one definition. Some use the term "anarchy" to refer to a society without a publicly enforced government or violently enforced political authority. When used in this sense, ana…
The black flag, and the color black in general, have been associated with anarchism since the 1880s. Many anarchist collectives contain the word "black" in their names. There have been a number of an…
The black rose is a symbol of anarchist movements.
The Jolly Roger as a black flag with skull and bones has recently gained a popularity among anarchists.
The sabot or wooden shoe (also known as clog) was used symbolically by anarchists in the 19th and early 20th century, although it has largely faded from use since then.
The five-pointed red star is a symbol of communism as well as broader socialism in general. It is sometimes understood to represent the five fingers of the worker's hand, which run the five continent…
The red flag is often seen in combination with other communist symbols and party names. The flag is used at various communist and socialist rallies like May Day, or used in a red bloc. The flag, bein…
The significance of the banner was that a free Workers Republic of Ireland would control its own destiny from the plough to the stars and the sword forged into the plough would mean the redundancy of…
The raised fist (also known as the clenched fist) is a symbol of solidarity and support.
A happy face, smiling face, smiley, or :) is a stylized representation of a smiling humanoid face, commonly occurring in popular culture. It is commonly represented as a yellow (many other colors are…