Opnav 6420 1-2025

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The document COMUSFLTFORCOM/COMPACFLTINST 6320.3B outlines the medical screening process for civilians embarking on United States Navy vessels. It emphasizes the importance of participants being in good health due to the strenuous nature of embarkation and limited medical facilities available onboard. The document details required medical information, potential disqualifying conditions, and responsibilities of applicants regarding their health status and necessary medications. It also includes a privacy statement and instructions for completing the screening form.

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Click ‘Get Form’ to open it in the editor.
Begin by filling out the applicant section. Enter your last name, first name, middle initial, and suffix. Then provide your date of birth in MMDDYYYY format.
Next, input your height and weight in inches and pounds respectively. Specify your blood type and the purpose of screening.
Complete the medical history section by marking 'YES' or 'NO' for each health condition listed. If you answer 'YES' to any question, provide detailed explanations in section 2.b.
In the allergies and current medications sections, list any known allergies and medications you are currently taking.
Finally, review all entries for accuracy before signing the form. Ensure that you include your contact information and date signed.

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When was the first submarine built?

This photograph from the Cartagena Naval Museum archive shows the submarine as it is today. Submarines were originally invented in order to improve human understanding of the marine environment. Despite these exploratory origins, the vessels were soon seen as potential naval weapons.

Who invented the first submarine and how did it work?

The first practical submarine was built in 1620 by Cornelis Drebbel under the employ of King James I. A leather-covered 12-oar rowboat, Drebbels submarine was reinforced with iron to withstand water pressure, and was functional, submerged to a depth of fifteen feet beneath the River Thames.

Which country built the first submarine?

The first confirmed building of a submarine comes from 1620, with a submersible designed and built by Cornelis Drebbel, a Dutchman in the service of King James I of England. His device used oars to steer, and between 1630 and 1624, two improved versions were tested in the River Thames.

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Who is the first submarine in the world?

The first submersible of whose construction there exists reliable information was designed and built in 1620 by Cornelis Drebbel, a Dutchman in the service of James I of England. It was propelled by means of oars.

What are submarines used for today?

The submarine was conceived by British mathematician William Bourne in 1578, but the first one actually built was that of Dutch inventor Cornelis Drebbel, which dove under the River Thames in 1620.

Who built the first submarine and when?

Proposals for underwater boats date back to the late 1500s. The first submarine actually constructed was probably a vessel created and tested in the early seventeenth century by Dutch inventor Cornelis Drebbel. Over the next two centuries, various inventors continued to work out design problems.

Who made the first submarine in the world?

Deep Defense. U.S. submarines are capable of and conduct a vast array of missions including anti-surface and antisubmarine warfare, intelligence gathering, mine reconnaissance, land attacks, polar operations, Special Forces support and defending other fleet ships.

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