Results 21 to 30 of about 184,802 (281)

Parametric Study of the Hydrodynamic Characteristics of the Pumpjet Propulsor for the SUBOFF Submarine

open access: yesJournal of Marine Science and Engineering, 2023
Submarines with pumpjet propulsors have recently been used in many countries to improve their propulsion and noise performance. The pumpjet has the advantage of improving noise and cavitation performance by increasing the pressure inside the duct, and it
Jin-Wook Kim   +5 more
doaj   +1 more source

Computational Investigation of Seakeeping Performance of a Surfaced Submarine in Regular Waves

open access: yes한국해양공학회지, 2022
A submarine is optimized to operate below the water surface because it spends most of its time in a submerged condition. However, the performance in free surface conditions is also important because it is unavoidable for port departure and arrival ...
Doojin Jung, Sanghyun Kim
doaj   +1 more source

Morphology of Salina offshore (Southern Tyrrhenian Sea) [PDF]

open access: yes, 2015
In this paper, we present the first complete morphological map of the Salina offshore at a scale of 1:100,000. The submarine flanks of the Salina edifice extend down to −650 to −1300 m, are steep and characterized by an uneven morphology due to the ...
Bosman, A   +3 more
core   +2 more sources

Technical–Economic Feasibility Analysis of Subsea Shuttle Tanker

open access: yesJournal of Marine Science and Engineering, 2021
This paper presents the technical and economic feasibility analysis of the subsea shuttle tanker (SST). The SST is proposed as an alternative to subsea pipelines and surface tankers with the primary purpose of transporting CO2 autonomously underwater ...
Yihan Xing   +2 more
doaj   +1 more source

Submarine depositional terraces at Salina Island (Southern Tyrrhenian Sea) and implications on the Late-Quaternary evolution of the insular shelf [PDF]

open access: yes, 2018
The integrated analysis of high-resolution multibeam bathymetry and single-channel seismic profiles around Salina Island allowed us to characterize the stratigraphic architecture of the insular shelf.
Adami, Chiara   +6 more
core   +2 more sources

Solution of Supplee's submarine paradox through special and general relativity

open access: yes, 2016
In 1989 Supplee described an apparent relativistic paradox on which a submarine seems to sink to observers at rest within the ocean, but it rather seems to float in the submarine proper frame. In this letter, we show that the paradox arises from a misuse
Vieira, R. S.
core   +1 more source

Onshore Thermokarst Primes Subsea Permafrost Degradation

open access: yesGeophysical Research Letters, 2021
The response of permafrost to marine submergence can vary between ice‐rich late Pleistocene deposits and the thermokarst basins that thawed out during the Holocene. We hypothesize that inundated Alases offshore thaw faster than submerged Yedoma.
Michael Angelopoulos   +11 more
doaj   +1 more source

Evaluating Ice Load during Submarine Surfacing and Ice Breaking

open access: yesJournal of Marine Science and Engineering, 2023
At present, the calculation method of ice load on surface navigation ships has been very mature, but the calculation method of submarine ice load is very few. The reasonable evaluation of submarine ice load has become an urgent problem to be solved.
Liang Li   +5 more
doaj   +1 more source

Meltwater Intrusions Reveal Mechanisms for Rapid Submarine Melt at a Tidewater Glacier [PDF]

open access: yes, 2019
Submarine melting has been implicated as a driver of glacier retreat and sea level rise, but to date melting has been difficult to observe and quantify. As a result, melt rates have been estimated from parameterizations that are largely unconstrained by ...
Amundson, Jason M.   +8 more
core   +1 more source

Design of space turning motion control system of X-rudder submarine

open access: yesZhongguo Jianchuan Yanjiu, 2020
[Objectives] In order to solve the problem of space turning motion control for the X-rudder submarine,a fuzzy control system for turning of the X-rudder submarine is designed by using the fuzzy control method.[Methods] A weight fuzzy system for the X ...
XIA Ji, HUANG Bin
doaj   +1 more source

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