kth.sePublications
Change search
Link to record
Permanent link

Direct link
Publications (10 of 68) Show all publications
Zu, M., Garme, K. & Rosén, A. (2024). Seakeeping criteria revisited. Ocean Engineering, 297, Article ID 116785.
Open this publication in new window or tab >>Seakeeping criteria revisited
2024 (English)In: Ocean Engineering, ISSN 0029-8018, E-ISSN 1873-5258, Vol. 297, article id 116785Article in journal (Refereed) Published
Abstract [en]

Seakeeping evaluations are important in the early design stages in order to ensure that vessels can sail the seas and execute their missions safely in the intended conditions. Such evaluations require a set of criteria that translate seakeeping design requirements into tangible measures for decision-making. Despite the availability of seakeeping criteria, certain unsuitable considerations and specifications currently in use result in challenges to crew and operations that do not become apparent until later in a vessel’s service. Though not claimed to be exhaustive, this paper catalogues and reviews the seakeeping criteria commonly used to date, guided by findings from focus group discussions and semi-structured interviews.  The paper unearths the original sources whilst discussing the scientific basis for these criteria and standards. Particular attention is given to the early design stages and opportunities for improvement and further development are highlighted. Findings from this study indicate that it is necessary to develop seakeeping criteria for certain vessel types and that there are opportunities to improve seakeeping criteria addressing crew well-being, performance and safety.

Place, publisher, year, edition, pages
Elsevier BV, 2024
Keywords
seakeeping criteria, seakeeping evaluation, crew performance, crew safety
National Category
Vehicle Engineering
Identifiers
urn:nbn:se:kth:diva-343594 (URN)10.1016/j.oceaneng.2024.116785 (DOI)2-s2.0-85185380601 (Scopus ID)
Funder
Swedish Transport Administration, TRV2019/12462Swedish Transport Administration, TRV2021/99989
Note

QC 20240221

Available from: 2024-02-21 Created: 2024-02-21 Last updated: 2024-02-28Bibliographically approved
de Alwis, P. & Garme, K. (2023). Feasibility of Using Kidney-Belt-Mounted Accelerometers for Measuring Shock and Vibration Exerted on the Lumbar Spine Region of High-Speed Marine Craft Occupants. In: HSMV 2023 - Proceedings of the 13th Symposium on High Speed Marine Vehicles: . Paper presented at 13th Symposium on High Speed Marine Vehicles, HSMV 2023, Naples, Italy, Oct 23 2023 - Oct 25 2023 (pp. 233-240). IOS Press
Open this publication in new window or tab >>Feasibility of Using Kidney-Belt-Mounted Accelerometers for Measuring Shock and Vibration Exerted on the Lumbar Spine Region of High-Speed Marine Craft Occupants
2023 (English)In: HSMV 2023 - Proceedings of the 13th Symposium on High Speed Marine Vehicles, IOS Press , 2023, p. 233-240Conference paper, Published paper (Refereed)
Abstract [en]

The feasibility of using kidney-belt-mounted accelerometers for measuring the shock and vibration exposure in the lumbar spine region of high-speed marine craft occupants and evaluating them on a par with the current standards remain largely unexplored in scientific literature. To address this gap a series of laboratory and field experiments were conducted. In the laboratory experiments, two test subjects performed predefined body movements while accelerations were measured using body-mounted and kidney-belt-mounted accelerometers. Field experiments involved recording acceleration exposures of two test subjects using the kidney belt arrangement and seat-mounted accelerometers during a high-speed marine craft exercise. Results suggest that kidney-belt-mounted accelerometers effectively measure lumbar spine accelerations during basic body movements with an upright torso. However, evaluating vibration exposures measured with the kidney belt arrangement using existing international standards proved challenging in the field experiment.

Place, publisher, year, edition, pages
IOS Press, 2023
Keywords
High-speed craft, musculoskeletal pain, whole-body vibration
National Category
Vehicle Engineering Occupational Health and Environmental Health
Identifiers
urn:nbn:se:kth:diva-340534 (URN)10.3233/PMST230030 (DOI)2-s2.0-85177689889 (Scopus ID)
Conference
13th Symposium on High Speed Marine Vehicles, HSMV 2023, Naples, Italy, Oct 23 2023 - Oct 25 2023
Note

Part of ISBN 9781643684420

QC 20231207

Available from: 2023-12-07 Created: 2023-12-07 Last updated: 2023-12-07Bibliographically approved
Garme, K. (2023). Warp Effects and Bow Submergence; over the Limit for a 2D+t Strip Model of HSC?. In: HSMV 2023 - Proceedings of the 13th Symposium on High Speed Marine Vehicles: . Paper presented at 13th Symposium on High Speed Marine Vehicles, HSMV 2023, Naples, Italy, Oct 23 2023 - Oct 25 2023 (pp. 3-10). IOS Press
Open this publication in new window or tab >>Warp Effects and Bow Submergence; over the Limit for a 2D+t Strip Model of HSC?
2023 (English)In: HSMV 2023 - Proceedings of the 13th Symposium on High Speed Marine Vehicles, IOS Press , 2023, p. 3-10Conference paper, Published paper (Refereed)
Abstract [en]

A time-domain strip method, in the Zarnick tradition, is examined for validity in simulating warped, non-prismatic, planing hulls in calm water, regular and irregular waves. Results on simulations of model experiments are shown. Validity is exemplified by direct comparison by experiment time-series and the simulated correspondence. The 2D+t strip approach is concluded valid for simulating the examined experiments.

Place, publisher, year, edition, pages
IOS Press, 2023
Keywords
2D+t, HSC, seakeeping, Strip-method, time-domain, validation, warp
National Category
Water Engineering
Identifiers
urn:nbn:se:kth:diva-340542 (URN)10.3233/PMST230003 (DOI)2-s2.0-85177673660 (Scopus ID)
Conference
13th Symposium on High Speed Marine Vehicles, HSMV 2023, Naples, Italy, Oct 23 2023 - Oct 25 2023
Note

Part of ISBN 9781643684420

QC 20231207

Available from: 2023-12-07 Created: 2023-12-07 Last updated: 2024-02-29Bibliographically approved
Sun, Q., Zhang, M., Li, Z., Garme, K. & Burman, M. (2022). A machine learning-based method for prediction of ship performance in ice: Part I. ice resistance. Marine Structures, 83, 103181-103181, Article ID 103181.
Open this publication in new window or tab >>A machine learning-based method for prediction of ship performance in ice: Part I. ice resistance
Show others...
2022 (English)In: Marine Structures, ISSN 0951-8339, E-ISSN 1873-4170, Vol. 83, p. 103181-103181, article id 103181Article in journal (Refereed) Published
Abstract [en]

This article focuses on design of an Artificial Neural Network (ANN) model to estimate ship resistance in ice-covered water by using suitable ship and ice parameters. In order to develop a reliable model, as much ice resistance test data as from the ship sea trials and model test measurements are collected to train the neural network. Different features (ship design parameters and ice mechanic properties) are explored to find a suitable combination of input features. Several algorithms are tested and compared to select a good model for resistance prediction. It turns out that seven features and the Radial Basis Function - Particle Swarm Optimization algorithm (RBF-PSO) can provide a reasonable generalization model. This study shows that the ice resistance predicted by the ANN correlates well with the measured data. The model developed herein can be used as an ice resistance prediction tool with high accuracy compared to the conventional semi-empirical formulae used in polar ship design.

Place, publisher, year, edition, pages
Elsevier BV, 2022
National Category
Marine Engineering
Identifiers
urn:nbn:se:kth:diva-309043 (URN)10.1016/j.marstruc.2022.103181 (DOI)000772604600001 ()2-s2.0-85124695016 (Scopus ID)
Note

QC 20220824

Available from: 2022-02-21 Created: 2022-02-21 Last updated: 2024-03-15Bibliographically approved
Cheemakurthy, H. & Garme, K. (2022). A modularly tailored commuter ferry platform. International Shipbuilding Progress, 69, 1-35, Article ID ISP-210016.
Open this publication in new window or tab >>A modularly tailored commuter ferry platform
2022 (English)In: International Shipbuilding Progress, ISSN 0020-868X, E-ISSN 1566-2829, Vol. 69, p. 1-35, article id ISP-210016Article in journal (Refereed) Published
Abstract [en]

Among the challenges for implementation of Waterborne public transportation (WPT) are the difficulties in procuring efficient ferries tailored towards local requirements. Fundamental questions on the ferry’s environmental impact, speed and procurement costs linger in the public transport (PTP) mind. In this paper, a methodology for adopting a platform architecture for ferries is illustrated by a modular design approach. For this, WPT operational profiles are categorized by three route types in a structure for operational requirements including sustainability performance. Generic parameters for size and speed of WPT ferries are defined. Using these parameters as a skeletal structure, a modular commuter ferry concept is proposed as a set of basic modules. As a combination of these functionally independent modules, a ferry can be tailored to fit the operational requirements. The paper proposes standard sizes for waterborne commuter craft and shows that ferries are compatible with land-based public transport in terms of energy efficiency and speed. Suitable speed ranges for mono hulls and catamarans are investigated and the idea of modular design for rational procurement is explored and illustrated for the three type routes. The proposed concepts can make WPT more attractive for PTPs as a sustainable option to complement the existing network.

Place, publisher, year, edition, pages
Amsterdam: IOS Press, 2022
Keywords
Modular design, Waterborne public transportation, commuter ferry, product family, ship design, Waterborne urban mobility, Function Structure Heuristics
National Category
Vehicle Engineering
Research subject
Vehicle and Maritime Engineering
Identifiers
urn:nbn:se:kth:diva-312357 (URN)10.3233/isp-210016 (DOI)000812966900003 ()2-s2.0-85127028448 (Scopus ID)
Funder
Swedish Transport Administration, TRV 2018/6471
Note

QC 20220518

Available from: 2022-05-17 Created: 2022-05-17 Last updated: 2022-12-16Bibliographically approved
Zhang, M., Sun, Q., Garme, K., Burman, M. & Zhou, L. (2022). Analysis of inland waterway ship performance in ice: Operation Time Window. Ocean Engineering, 263, 112409-112409, Article ID 112409.
Open this publication in new window or tab >>Analysis of inland waterway ship performance in ice: Operation Time Window
Show others...
2022 (English)In: Ocean Engineering, ISSN 0029-8018, E-ISSN 1873-5258, Vol. 263, p. 112409-112409, article id 112409Article in journal, Editorial material (Refereed) Published
Abstract [en]

Inland waterway (IWW) shipping is a sustainable opportunity to reduce traffic on, in many times very congested, roads and railways. This is especially true for cities and urban areas. However, for an operator, the ship Operation Time Window (OTW) is important in order to predict possible business cases, especially for regions with long-term winter seasons with icy conditions. The OTW indicates the probable number of navigable days for the ship. The operability is in relation with ship speed, ice thickness, whereas the ship resistance is of significant relevance. This study proposes a model to investigate the possibility of a certain operating condition for ice-going ships based on an Artificial Neural Network (ANN) model and a statistical model. To demonstrate the proposed method for calculating the ship OTW of an IWW, a case study is performed. Ice condition in Lake Mälaren (in Sweden) and an IWW ship designed to maximise its dimension restrictions are used for this case. The Radial Basis Function-Particle swarm optimization (RBF-PSO) ANN model is used to predict ice resistance in level ice conditions. Given the ice resistance prediction, a statistical analysis is further conducted regarding to the ice thickness distribution and the operational ship speed distribution to obtain ship OTW. Comparisons are made between semi-empirical ice resistance prediction methods and the ANN model. The influence of different ship speed distribution profiles is investigated by performing a parametric study. The OTW model can be used to evaluate ship operational scenarios in ice-covered waters for ship designers and owners.

Place, publisher, year, edition, pages
Elsevier BV, 2022
Keywords
Ice-going ships, Inland waterway, Artificial neural network, Ice resistance, Operation time window, Statistical analysis
National Category
Marine Engineering
Research subject
Vehicle and Maritime Engineering
Identifiers
urn:nbn:se:kth:diva-318902 (URN)10.1016/j.oceaneng.2022.112409 (DOI)000862138800003 ()2-s2.0-85138143683 (Scopus ID)
Note

QC 20221031

Available from: 2022-09-23 Created: 2022-09-23 Last updated: 2022-10-31Bibliographically approved
Cheemakurthy, H., Barsoum, Z., Burman, M. & Garme, K. (2022). Comparison of Lightweight Structures in Bearing Impact Loads during Ice–Hull Interaction. Journal of Marine Science and Engineering, 10(6), 794, Article ID 794.
Open this publication in new window or tab >>Comparison of Lightweight Structures in Bearing Impact Loads during Ice–Hull Interaction
2022 (English)In: Journal of Marine Science and Engineering, E-ISSN 2077-1312, Vol. 10, no 6, p. 794-, article id 794Article in journal (Refereed) Published
Abstract [en]

The current study focuses on the impact loading phase characteristic of thin first year ice in inland waterways. We investigate metal grillages, fibre reinforced plastic (FRP) composites and nature-inspired composites using LS Dyna. The impact mode is modelled as (a) simplified impact model with a rigid-body impactor and (b) an experimentally validated ice model represented by cohesive zone elements. The structural concepts are investigated parametrically for strength and stiffness using the simplified model, and an aluminium alloy grillage is analysed with the ice model. The metal–FRP composite was found to be the most favourable concept that offered impact protection as well as being light weight. By weight, FRP composites with a Bouligand ply arrangement were the most favourable but prone to impact damage. Further, aluminium grillage was found to be a significant contender for a range of ice impact velocities. While the ice model is experimentally validated, a drawback of the simplified model is the lack of experimental data. We overcame this by limiting the scope to low velocity impact and investigating only relative structural performance. By doing so, the study identifies significant parameters and parametric trends along with material differences for all structural concepts. The outcomes result in the creation of a viable pool of lightweight variants that fulfil the impact loading phase. Together with outcomes from quasi-static loading phase, it is possible to develop a lightweight ice-going hull concept.

Place, publisher, year, edition, pages
Basel, Switzerland: MDPI AG, 2022
Keywords
composites; metal grillage; aluminium hull; ice loads; LS Dyna; urban waterborne mobility; inland waterways; impact modelling; bio-inspired structures; ice-going hull
National Category
Vehicle Engineering
Research subject
Vehicle and Maritime Engineering
Identifiers
urn:nbn:se:kth:diva-313910 (URN)10.3390/jmse10060794 (DOI)000817667100001 ()2-s2.0-85132789739 (Scopus ID)
Projects
Lightweight ice going hull structures.
Funder
Swedish Transport Administration, TRV 2018/6471
Note

QC 20220613

Available from: 2022-06-13 Created: 2022-06-13 Last updated: 2023-03-22Bibliographically approved
Cheemakurthy, H. & Garme, K. (2022). Fuzzy AHP-Based Design Performance Index for Evaluation of Ferries. Sustainability, 14(6), 3680-3680
Open this publication in new window or tab >>Fuzzy AHP-Based Design Performance Index for Evaluation of Ferries
2022 (English)In: Sustainability, E-ISSN 2071-1050, Vol. 14, no 6, p. 3680-3680Article in journal (Refereed) Published
Abstract [en]

Within waterborne public transportation (WPT), one often observes a mismatch between the operational requirements and ferry characteristics. A method to holistically evaluate ferries with respect to local requirements could lead to tailored procurement and targeted refurbishment of existing fleet. In this study, we develop a structure for operational requirements and use it as a basis for a ferry evaluation methodology. The requirements’ structure follows a three-level hierarchy starting from broad vessel design to mandatory requirements to performance requirements. The performance requirements are based on the three pillars of sustainability, aided by commuter surveys carried out in Stockholm ferries, interviews with public transport providers (PTP) and previous literature. The evaluation of the ferry is performed using analytic hierarchic process (AHP) to convert the PTP’s subjective preferences and ferry performance into a single dimensionless index. Rules for quantification of performance metrics including social performance are proposed. The uncertainties associated with AHP are addressed by employing fuzzy AHP based on extent analysis and fuzzy AHP in combination with particle swarm optimization. Two applications including performance assessment of existing ferries and assembly of a modular ferry are discussed. The method can lead to objective decision making in ferry evaluation, potentially leading to a more efficient WPT.

Place, publisher, year, edition, pages
MDPI AG, 2022
Keywords
ship design; urban waterborne mobility; commuter ferry; AHP; performance evaluation; operational requirements; waterborne public transportation; sustainable performance; modular ferry; ferry refurbishment
National Category
Vehicle Engineering Applied Mechanics Other Mechanical Engineering Transport Systems and Logistics
Research subject
Vehicle and Maritime Engineering
Identifiers
urn:nbn:se:kth:diva-311241 (URN)10.3390/su14063680 (DOI)000774707500001 ()2-s2.0-85127022939 (Scopus ID)
Funder
Swedish Transport Administration, TRV 2018/6471
Note

QC 20220421

Available from: 2022-04-20 Created: 2022-04-20 Last updated: 2022-09-09Bibliographically approved
Cheemakurthy, H., Barsoum, Z., Burman, M. & Garme, K. (2022). Lightweight Structural Concepts in Bearing Quasi-Static Ice Hull Interaction Loads. Journal of Marine Science and Engineering, 10(3), 416-416
Open this publication in new window or tab >>Lightweight Structural Concepts in Bearing Quasi-Static Ice Hull Interaction Loads
2022 (English)In: Journal of Marine Science and Engineering, E-ISSN 2077-1312, Vol. 10, no 3, p. 416-416Article in journal (Refereed) Published
Abstract [en]

Lightweight ice-class vessels offer the possibility of increasing the payload capacity while making them comparable in energy consumption with non-ice-class vessels during ice-free periods. We approach the development of a lightweight hull by dividing ice–hull interactions into quasi-static loading and impact loading phases. Then, investigative outcomes of lightweight concepts for each loading phase may be combined to develop a lightweight ice-going hull. In this study, we focus on the quasi-static loading phase characteristic of thin first-year ice in inland waterways. We investigate metal grillages, sandwich structures and stiffened sandwich structures parametrically using the finite element method. The model is validated using previous experimental studies. In total over 2000 cases are investigated for strength and stiffness with respect to mass. The stiffened sandwich was found to be the most favorable concept that offered both a light weight as well as high gross tonnage. Further, significant parameters and their interactions and material differences for the three structural concepts were investigated and their trends discussed. The outcomes result in the creation of a viable pool of lightweight variants that fulfill the quasi-static loading phase. Together with outcomes from the impact loading phase, a lightweight ice-going hull may be developed.

Place, publisher, year, edition, pages
MDPI AG, 2022
Keywords
sandwich; metal grillage; aluminum hull; ice loads; finite element method; urban waterborne mobility; inland waterways
National Category
Applied Mechanics Transport Systems and Logistics Vehicle Engineering Other Mechanical Engineering
Research subject
Vehicle and Maritime Engineering
Identifiers
urn:nbn:se:kth:diva-311242 (URN)10.3390/jmse10030416 (DOI)000774887100001 ()2-s2.0-85127027889 (Scopus ID)
Funder
Swedish Transport Administration, TRV 2018/6471
Note

QC 20220503

Available from: 2022-04-20 Created: 2022-04-20 Last updated: 2022-09-09Bibliographically approved
Zu, M., Garme, K., Rosén, A. & Costa, N. (2022). Specifying Seakeeping Criteria for Efficient Task Performance. In: Proceedings 15th International Symposium on Practical Design of Ships and Other Floating Structures PRADS 2022: . Paper presented at 15th International Symposium on Practical Design of Ships and Other Floating Structures, October 9 - 13, 2022, Dubrovnik, Croatia.
Open this publication in new window or tab >>Specifying Seakeeping Criteria for Efficient Task Performance
2022 (English)In: Proceedings 15th International Symposium on Practical Design of Ships and Other Floating Structures PRADS 2022, 2022Conference paper, Published paper (Refereed)
Abstract [en]

Determining the operability of a vessel is a critical task for the naval architect since it provides valuable information for vessel owners and operators on the vessel’s performance. This task requires a seakeeping analysis and a set of seakeeping criteria to evaluate predicted vessel motions. These seakeeping criteria link the performance and safety of the crew and vessel to operability. Existing seakeeping criteria (e.g., NORDFORSK, NATO STANAG 4154) are specified for certain vessel types and not applicable to different tasks and operational activities aboard work vessels such as pilot boats, ocean research vessels, dredgers, pipe laying crane vessels. Being relatively small in size, these work vessels are susceptible to the perils of waves, yielding motion responses that can degrade crew performance. This paper proposes a framework for specifying seakeeping criteria for efficient task performance, focusing primarily on the effects of motions on the crew and system performance. Findings from preliminary interviews with some crew at the Swedish Maritime Administration and the Swedish Sea Rescue Society align with the literature on the effects of motions on crew performance, including motion-induced interruptions, motion-induced fatigue, motion sickness, and effects on motor skills and perception. These findings from the interviews are used in a case study to demonstrate the approach of the proposed framework. The proposed framework refines further and adds to the established structure of the traditional seakeeping assessment since it captures, in addition, the effect of motions on crew performance.

Keywords
work vessels, seakeeping criteria, operability, human factors, motion-induced interruptions (MII), motion-induced fatigue (MIF), motion sickness incidence (MSI)
National Category
Other Engineering and Technologies not elsewhere specified
Research subject
Vehicle and Maritime Engineering
Identifiers
urn:nbn:se:kth:diva-334220 (URN)
Conference
15th International Symposium on Practical Design of Ships and Other Floating Structures, October 9 - 13, 2022, Dubrovnik, Croatia
Funder
Swedish Transport Administration
Note

QC 20230818

Available from: 2023-08-17 Created: 2023-08-17 Last updated: 2023-08-18Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-9110-9401

Search in DiVA

Show all publications