File:Bolbous bow. (10357633286).jpg
Original file (2,400 × 1,635 pixels, file size: 2.77 MB, MIME type: image/jpeg)
Captions
Summary
[edit]DescriptionBolbous bow. (10357633286).jpg | A bulbous bow is a protruding bulb at the bow of a ship located just below the normal waterline. As the ship moves through the water, the bulbous bow modifies the flow of water around the hull, thereby reducing drag and increasing speed, range, and stability. Large ships (those with lengths of about 15 meters or more) with bulbous bows generally experience a 12% or greater fuel efficiency compared to similar vessels without bulbous bows. Fuel efficiency tends to increase with speed. Modeled somewhat on the ramming bows of ancient Greek triremes, the first modern bulbous bow was on the USS Delaware launched in 1910. A few other ships followed suit, but it was clearly viewed as experimental. Engineering research on the design was conducted in the 1950s, but the concept was not widely accepted until computer modeling in the 1980s proved the value of the additional work and steelweight. Now, only the smallest of commercial vessels are constructed without a bulbous bow |
Date | |
Source | Bolbous bow. |
Author | Bernard Spragg. NZ from Christchurch, New Zealand |
Camera location | 43° 36′ 21.44″ S, 172° 42′ 33.27″ E | View this and other nearby images on: OpenStreetMap | -43.605955; 172.709241 |
---|
Licensing
[edit]This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. | |
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse |
This image was originally posted to Flickr by Bernard Spragg at https://flickr.com/photos/88123769@N02/10357633286. It was reviewed on 11 April 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-zero. |
11 April 2021
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 08:03, 11 April 2021 | 2,400 × 1,635 (2.77 MB) | Rudolphous (talk | contribs) | Transferred from Flickr via #flickr2commons |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Image title |
|
---|---|
Camera manufacturer | SONY |
Camera model | DSLR-A580 |
Exposure time | 1/200 sec (0.005) |
F-number | f/10 |
ISO speed rating | 400 |
Date and time of data generation | 14:21, 19 October 2013 |
Lens focal length | 85 mm |
Orientation | Normal |
Horizontal resolution | 350 dpi |
Vertical resolution | 350 dpi |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 18:20, 19 October 2013 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.3 |
Date and time of digitizing | 14:21, 19 October 2013 |
Meaning of each component |
|
Image compression mode | 2 |
APEX brightness | 6.75 |
APEX exposure bias | −1 |
Maximum land aperture | 4.97 APEX (f/5.6) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Focal length in 35 mm film | 127 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Supported Flashpix version | 1 |
Image width | 2,400 px |
Image height | 1,635 px |
Date metadata was last modified | 07:20, 20 October 2013 |
IIM version | 2 |