Results 31 to 40 of about 1,034 (129)

Comparative Analysis of the Usefulness of AIS and ARPA for Anti-collision Purposes [PDF]

open access: yesTransNav, 2020
The article discusses the principles of presenting data available from AIS and radar tracking on ship's radar display units and describes the results of comparative studies of the accuracy of their indications on sea-going vessels in real meeting ...
Ryszard Wawruch
doaj   +1 more source

COLREGs in STCW Convention

open access: yesPomorski zbornik, 2018
Studies have shown that vessel collisions have been identified as one of the most frequent type of accidents. According to some authors, the main reason for that is the lack of understanding or a wrong interpretation of International Regulations for Preventing Collisions at Sea.
Ivanišević, Dalibor   +2 more
openaire   +1 more source

A Simulative Comparison of Ship Domains and Their Polygonal Approximations [PDF]

open access: yesTransNav, 2015
The paper investigates the impact of a precise ship domain shape on the size of collision avoidance manoeuvres. The considered collision avoidance manoeuvres include both course and speed alterations.
Rafal Szlapczynski, Joanna Szlapczynska
doaj   +1 more source

Study Reliability of the Information About the CPA and TCPA Indicated by the Ship's AIS [PDF]

open access: yesTransNav, 2016
According to the IMO recommendation when the target data from AIS and radar tracking are both available and the association criteria are fulfilled such that the AIS and radar information are considered as for one physical target, then as a default ...
Ryszard Wawruch
doaj   +1 more source

EDA: New System for Improving Navigation Standards (Totem Plus) [PDF]

open access: yesTransNav, 2017
EDA is a tool for auditing vessel?s performance that helps installing strict safety navigation standards on ships. The practice of investigating every near-miss event is common in aviation, but unheard of in the maritime industry. At the same time, major
Azriel Rahav
doaj   +1 more source

Assessment of USV Certification Requirements for COLREGS Compliance, Anti-Tamper, Environmental and General Safety [PDF]

open access: yes, 2020
The Navy’s family of Unmanned Surface Vessels (USV) needs rational, robust and repeatable certification criteria for Collision Regulation (COLREGS) compliance, antitamper, environmental and general safety to ensure their readiness for worldwide ...
Gallup, Shelley P.   +6 more
core   +2 more sources

COLREGS-Compliant Autonomous Collision Avoidance Using Multi-Objective Optimization with Interval Programming [PDF]

open access: yes, 2014
CIVINS (Civilian Institutions) Thesis documentHigh contact density environments are becoming ubiquitous in autonomous marine vehicle (AMV) operations. Safely managing these environments and their mission greatly taxes platforms.
Woerner, Kyle, Kyle Woerner
core   +3 more sources

DSSA+: Distributed Collision Avoidance Algorithm in an Environment where Both Course and Speed Changes are Allowed [PDF]

open access: yesTransNav, 2019
Distributed Stochastic Search Algorithm (DSSA) is one of state-of-the-art distributed algorithms for the ship collision avoidance problem. In DSSA, whenever a ship encounters with any number of other ships (neighboring ships), she will select her course ...
Katsutoshi Hirayama   +3 more
doaj   +1 more source

COLREGs-compliant ship collision avoidance strategy based on proximal policy optimization algorithm

open access: yesFrontiers in Marine Science
The safe and efficient collision avoidance of multiple ships is essential for maritime navigation and intelligent shipping systems. In this paper, we propose a novel COLREGs-compliant multi-ship collision avoidance strategy based on deep reinforcement ...
Qiaosheng Zhao   +7 more
doaj   +1 more source

Development of Automatic Collision Avoidance System and Quantitative Evaluation of the Manoeuvring Results [PDF]

open access: yesTransNav, 2019
The automatic collision avoidance system introduced in this paper is a system constantly calculating optimal manoeuvring method from the risk and economic preference in the ship manoeuvring space where the course change and the deceleration are performed.
Shinya Nakamura, Naoki Okada
doaj   +1 more source

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