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Signs and symptoms of narcosis Pressure (bar) Depth (m) Depth (ft) Manifestations 1–2 0–10 0–33 Unnoticeable small symptoms, or no symptoms at all; 2–4 10–30 33–100 Mild impairment of performance of unpracticed tasks; Mildly impaired reasoning; Mild euphoria possible; 4–6 30–50 100–165 Delayed response to visual and auditory ...
Decompression sickness (DCS; also called divers' disease, the bends, aerobullosis, and caisson disease) is a medical condition caused by dissolved gases emerging from solution as bubbles inside the body tissues during decompression.
Medical symptoms refer to the manifestations or indications of a disease or condition, perceived and complained about by the patient. [ 1 ] [ 2 ] Patients observe these symptoms and seek medical advice from healthcare professionals.
Symptoms of hypernatremia may vary depending on type and how quickly the electrolyte disturbance developed. [27] Common symptoms are dehydration, nausea, vomiting, fatigue, weakness, increased thirst, and excess urination. Patients may be on medications that caused the imbalance such as diuretics or nonsteroidal anti-inflammatory drugs. [27]
A boatswain (/ ˈ b oʊ s ən / BOH-sən, formerly and dialectally also / ˈ b oʊ t s w eɪ n / BOHT-swayn), bo's'n, bos'n, or bosun, also known as a deck boss, or a qualified member of the deck department, is the most senior rate of the deck department and is responsible for the components of a ship's hull.
The second mate's primary duty is navigational, which includes updating charts and publications, keeping them current, making passage plans, and all aspects of ship navigation. The second mate's other duties may include directing line handlers, cargo watches, directing anchor detail and training and instructing crew members.
[b] (often attached to the man overboard pole on boats). With a sinister hoist, the semaphore flag. P Papa [ˈpa.pə] The Blue Peter. In harbour: 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 obstruction." Q Quebec [kəˈbɛk]
In small boats the pump is often hand operated. The cleaning mechanism is easily blocked if too much toilet paper or other fibrous material is put down the pan. Submarine heads face the problem that at greater depths higher water pressure makes it harder to pump the waste out through the hull.