Push-towed ocean going tug-barge operation in the integral and drop-and-swap modes : an economic comparison using a computer model. by Kaskin, Jonathan David

Subjects: Get full text

Membuat rekabentuk konsep / styling "Malaysia Motor Home" [microfilm] /

Subjects:

Rekabentuk sebuah peralatan untuk kuasa jet air [microfilm] / by Mohd. Afzanizam Mohd. Rosli

Subjects:

Modeling power distribution system of an electric ship for design and control by Ayu Aaron Alexander

“…The performance and the achievable fuel efficiency of a marine hybrid vessel such as an electric tugboat depends on its design, i.e., the installed capacity of diesel engine-generators and batteries. …”
Get full text

Fuel consumption and emission analysis of harbour vessels by Chen, Zhongshuo

“…The analyses were conducted with a case study of a tugboat. A discrete event simulation model was built based on an operational profile of the tugboat, and comparative cost analyses of diesel-powered tugboats and hydrogen-powered tugboats were conducted for current and future scenarios. …”
Get full text

Calculation of Towing Resistance of Jack-up Offshore Platform by AN Tao, LIN Zengyong, BAI Jian

“…In the course of towing of offshore platform, it is of great significance to calculate the towing resistance ahead of time and select the main tugboat with proper power for towing safety. In this paper, the calculation formulas or recommended methods for towing resistance of mainstream classification societies were investigated, and a CFD/AQWA finite element numerical simulation was conducted for the typical jack-up offshore platform in Shengli Petroleum Engineering Company.Based on the comparative analysis of the results, a suitable model for the calculation of towing resistance of platforms in domestic waters was optimized, and a suitable towing factor of safety was proposed.…”
Get full text

Precise Trajectory Tracking Control of Ship Towing Systems via a Dynamical Tracking Target by Ouxue Li, Yusheng Zhou

“…By applying the sliding mode control and inverse dynamic adaptive control methods, two appropriate robust torque controllers are designed via the dynamical tracking target, so that both the tugboat and the towed ship are able to track the desired path precisely. …”
Get full text

A new ice breaker module concept by Liviu Moise, Eugen Găvan, Daniela Ioana Tudose, Costel Iulian Mocanu

“…In this paper, a con-cept of an icebreaker module that can be attached to an existing tugboat in service is pro-posed. The paper presents a concept adapted to the Danube river and to an existing tug in service on the same river.…”
Get full text

Vibrations in Marine Power Transmission System by D. Doan, L. Murawski

“…The result of this paper is applied for the tugboat with the engine of power 350 HP.…”
Get full text

Dynamic analysis of towed cable with variable length during turning maneuvers by Dapeng Zhang, Bowen Zhao, Keqiang Zhu, Haoyu Jiang

“…However, under some particular operating situations, the tugboat must release the marine towed cable during rotation, resulting in a constant change in the length of the marine cable. …”
Get full text

Whatever is wrong with my LaTeX file? by Rahtz, S

“…Following a felicitous parallel drawn by <em>TUGboat</em> reviewer of this article, think of this like those posters on the doctor's wall which you read while waiting to see the specialist. …”

Filtering harbor craft vessels’ fuel data using statistical, decomposition, and predictive methodologies by Januwar Hadi, Dimitrios Konovessis, Zhi Yung Tay

“…This paper aims to study the effectiveness of these filtering techniques in filtering noisy data collected from mass flowmeter reading in an unconventional situation i.e., on a tugboat while in operation to measure fuel consumption. …”
Get full text

Improved YOLOv4 Marine Target Detection Combined with CBAM by Huixuan Fu, Guoqing Song, Yuchao Wang

“…Marine target detection datasets were collected and produced and marine targets were divided into ten categories, including speedboat, warship, passenger ship, cargo ship, sailboat, tugboat, and kayak. Aiming at the problem of insufficient detection accuracy of YOLOv4’s self-built marine target dataset, a convolutional attention module is added to the YOLOv4 network to increase the weight of useful features while suppressing the weight of invalid features to improve detection accuracy. …”
Get full text

Achieving fuel efficiency of harbour craft vessel via combined time-series and classification machine learning model with operational data by Januwar Hadi, Dimitrios Konovessis, Zhi Yung Tay

“…Subsequently, the k-means clustering groups the tugboat operational data from the same operations (i.e., cruising and towing) for the training of the classification model. …”
Get full text

Prediction of harbour vessel fuel consumption based on machine learning approach by Chen, Zhong Shuo, Lam, Jasmine Siu Lee, Xiao, Zengqi

“…A case study on the prediction of tugboat fuel consumption was conducted. The Random Forest model outperformed the other models. …”
Get full text

Formation of an effective labor incentive system to increase the efficiency of an enterprise (on the example of the Tuapse department of the Azovo-Chernomorsky basin branch) by A. K. Dorgushaova, T. S. Kuzina

“…The article considers the main activities of the Tuapse Department of the Azovo-Chernomorsky Basin Branch of FSUE «Rosmorport» represented by the following types of services: navigation, information, pilotage, dredging, tugboat services, services for the provision of berths for anchorage of ships and provision of crew vessels. …”
Get full text

Robust Real-Time Shipboard Energy Management System With Improved Adaptive Model Predictive Control by Wenjie Chen, Kang Tai, Michael Wai Shing Lau, Ahmed Abdelhakim, Ricky R. Chan, Alf Kare Adnanes, Tegoeh Tjahjowidodo

“…The prototyping controller verification tests have been performed with a hybrid fuel cell-fed shipboard power system hardware-in-the-loop (HIL) plant in the lab environment. Three typical tugboat load profiles with power fluctuations are implemented as case studies. …”
Get full text

Robust real-time shipboard energy management system with improved adaptive model predictive control by Chen, Wenjie, Tai, Kang, Lau, Michael Wai Shing, Abdelhakim, Ahmed, Chan, Ricky R., Adnanes, Alf Kare, Tjahjowidodo, Tegoeh

“…The prototyping controller verification tests have been performed with a hybrid fuel cell-fed shipboard power system hardware-in-the-loop (HIL) plant in the lab environment. Three typical tugboat load profiles with power fluctuations are implemented as case studies. …”
Get full text

Testing Industrial-Scale Coral Restoration Techniques: Harvesting and Culturing Wild Coral-Spawn Slicks by Christopher Doropoulos, Focco Vons, Focco Vons, Jesper Elzinga, Remment ter Hofstede, Kinam Salee, Mark van Koningsveld, Mark van Koningsveld, Russell C. Babcock

“…Testing the potential for scalability to commercial vessels, our trial focused on concentrating and collecting wild coral-spawn slicks for culturing until settlement competency using an experimental 50,000 L aquaculture facility built on a tugboat. Five objectives were set and all were achieved successfully, with only one requiring further optimization. …”
Get full text

Optimization of power and energy management for fuel cell-fed hybrid electric system in marine applications by Chen, Wenjie

“…The feasibility and control performance of the proposed optimization-based PMS is validated against the HIL plant with a typical tugboat’s operating profiles as a case study. The advantages and cost analysis of the proposed strategies are compared against a traditional rule-based control system and a theoretical operation as the baselines. …”
Get full text