Results 221 to 230 of about 774,978 (297)

The polar ship Frithjof

Polar Record, 2006
Frithjof participated in several North Pole expeditions between 1898 and 1907 and was also involved in several relief expeditions. Her most frequent commander was Captain Johan Kjeldsen, who was an internationally famous ice pilot. Frithjof was built in 1884 at Stokke on Oslo fjord, Norway.
Kjell-G. Kjær
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The polar ship Quest

Polar Record, 1998
AbstractSir Ernest Shackleton bought the Norwegian sealer Foca 7 in 1921 for his third Antarctic expedition and renamed it Quest. He died aboard the ship in South Georgia in January 1922, but Frank Wild took over the leadership and completed the expedition after the delayed start.
Angus B. Erskine, Kjell-G. Kjaer
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The polar ship Scotia

Polar Record, 2005
The ship that the oceanographer Dr William Speirs Bruce used on the Scottish National Antarctic Expedition, 1902–04, was originally a sealer named Hekla, built in Norway in 1872. In 1889 the Norwegian skipper Ragnvald Knudsen explored the northeast coast of Greenland between latitudes 74° and 75°, and in 1891–92 the ship was used by the Danish naval ...
Angus B. Erskine, Kjell-G. Kjær
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Performance-maximum optimization of the intelligent lifting activities for a polar ship crane through trajectory planning

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2022
Knuckle boom crane (KBC) mounted on a polar ship (PS) is a maritime engineering equipment widely used in offshore activities. The working performance of a PS-mounted KBC (PSKBC) may degrade quickly if manipulated manually under extreme working conditions
Siyu Li, Yutang Zou, Xiaonan Lai, Zhijie Liu, Xiaobang Wang   +4 more
semanticscholar   +1 more source

FPDDet: An Efficient Rotated SAR Ship Detector Based on Simple Polar Encoding and Decoding

IEEE Transactions on Geoscience and Remote Sensing, 2023
In the task of synthetic aperture radar (SAR) ship detection, ship targets exhibit arbitrary orientations and are closely aligned. In recent years, oriented bounding box (OBB)-based detectors have gained attention as a solution to the significant overlap
Moran Ju, Buniu Niu, Jingbo Zhang
semanticscholar   +1 more source

Research on the Optimization of the Lighting Environment in the public space of the Polar Cruise ship "Greg Mortimer"

China International Forum on Solid State Lighting, 2023
Adventure cruise is the most high-end cruise type. To provide tourists with ultimate travel experience, the lighting environment of public spaces has gradually become an important physical environment factor that affects the sense of experience and ...
Jian Minyu, Ge Wenjing, Yang Xiu
semanticscholar   +1 more source

Study on the peeling criterion of anti-ice and wear-resistant coating for polar ships and simulation analysis method of the ship-ice collision process

Mechanics of Advanced Materials and Structures, 2023
The wear-resistant coating on the hull surface can be peeled off under the collision between the ice during the navigation of polar ships. In this study, the damage and peeling of the anti-icing wear-resistant coating at different impact angles, impact ...
Yongjie Zhang, Guisen Luo, Lu Zhang
semanticscholar   +1 more source

Near-Shore ship segmentation based on I-Polar Mask in remote sensing

International Journal of Remote Sensing, 2022
With the development of deep convolutional neural network, the performance of instance segmentation algorithms has been significantly improved. However, it is difficult to implement quick and accurate near-shore ship segmentation due to the complex ...
Dongdong Zhang, Chunping Wang, Qiankun Fu   +2 more
semanticscholar   +1 more source

Propulsion Technology for Polar Expedition Ships

OTC Arctic Technology Conference, 2018
Abstract The cruise industry is seeking new markets and products to trigger a growing customer base around the world. As the more traditional cruise ships have become bigger and more geared towards mass tourism in typical locations like the Mediterranean and the Caribbean, there has also emerged a need for smaller niche type of cruises ...
Ole-Jacob Irgens, Kimmo Kokkila, Samuli Hänninen   +2 more
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Ship Detection Using Polarization Cross-Entropy

IEEE Geoscience and Remote Sensing Letters, 2009
In this letter, polarization cross-entropy is introduced based on the eigendecomposition of the polarimetric coherence matrix. Then, the new parameter is employed for ship detection. From experimental results, it is derived that the distribution of the polarization cross-entropy in ocean regions can be well approximated by a generalized exponential ...
null Jiong Chen, null Yilun Chen, null Jian Yang   +2 more
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