TY  - CONF
AU  - Kalajdžić, Milan
AU  - Mijatović, Luka
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7622
AB  - The research explores the impact of energy efficiency regulations on the author's custom-built database of over 200 ferries commuting in the Mediterranean Sea region (Mijatovic 2023) in order to address their near future and urge design adjustments. For that purpose, an attained and a required Energy Efficiency Existing Ship Index (EEXI) are calculated for each ship. The findings indicated that 172 ferries, or 87% of the ships, met IMO requirements as shown in Fig.1.The IMO's reduction factors for EEXI reveals a notable pattern. In most ship categories, these factors closely resemble the reduction factors employed during the second phase of Energy Efficiency Design Index (EEDI) implementation. However, this congruence doesn't extend to Ro-Pax ferries, where a distinct trend emerges. Specifically, it's intriguing to observe that for newly constructed vessels, the reduction factor stands at 20% (IMO 2021), while for existing ferries, it's a mere 5% (IMO 2021). This significant discrepancy prompted the decision to conduct also an EEDI calculation for the existing fleet of ferries. The aim was to gain valuable insights into how effectively the current design and inherent attributes of these ships align with the requirements set for newly built counterparts. While the EEDI calculation has primarily been applied to new ship designs, it has often served as the primary metric for evaluating energy efficiency in both new and existing vessels throughout the years.
PB  - Zonguldak Bülent Ecevit Üniversitesi
C3  - I. INTERNATIONAL MARITIME AND LOGISTICS CONGRESS - DELOK’23, September 22-23 - Proceedings Book
T1  - Energy Efficiency Scores of Ro-Pax ferries in the Mediterranean
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7622
ER  - 

@conference{
author = "Kalajdžić, Milan and Mijatović, Luka",
year = "2023",
abstract = "The research explores the impact of energy efficiency regulations on the author's custom-built database of over 200 ferries commuting in the Mediterranean Sea region (Mijatovic 2023) in order to address their near future and urge design adjustments. For that purpose, an attained and a required Energy Efficiency Existing Ship Index (EEXI) are calculated for each ship. The findings indicated that 172 ferries, or 87% of the ships, met IMO requirements as shown in Fig.1.The IMO's reduction factors for EEXI reveals a notable pattern. In most ship categories, these factors closely resemble the reduction factors employed during the second phase of Energy Efficiency Design Index (EEDI) implementation. However, this congruence doesn't extend to Ro-Pax ferries, where a distinct trend emerges. Specifically, it's intriguing to observe that for newly constructed vessels, the reduction factor stands at 20% (IMO 2021), while for existing ferries, it's a mere 5% (IMO 2021). This significant discrepancy prompted the decision to conduct also an EEDI calculation for the existing fleet of ferries. The aim was to gain valuable insights into how effectively the current design and inherent attributes of these ships align with the requirements set for newly built counterparts. While the EEDI calculation has primarily been applied to new ship designs, it has often served as the primary metric for evaluating energy efficiency in both new and existing vessels throughout the years.",
publisher = "Zonguldak Bülent Ecevit Üniversitesi",
journal = "I. INTERNATIONAL MARITIME AND LOGISTICS CONGRESS - DELOK’23, September 22-23 - Proceedings Book",
title = "Energy Efficiency Scores of Ro-Pax ferries in the Mediterranean",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7622"
}

Kalajdžić, M.,& Mijatović, L.. (2023). Energy Efficiency Scores of Ro-Pax ferries in the Mediterranean. in I. INTERNATIONAL MARITIME AND LOGISTICS CONGRESS - DELOK’23, September 22-23 - Proceedings Book
Zonguldak Bülent Ecevit Üniversitesi..
https://hdl.handle.net/21.15107/rcub_machinery_7622

Kalajdžić M, Mijatović L. Energy Efficiency Scores of Ro-Pax ferries in the Mediterranean. in I. INTERNATIONAL MARITIME AND LOGISTICS CONGRESS - DELOK’23, September 22-23 - Proceedings Book. 2023;.
https://hdl.handle.net/21.15107/rcub_machinery_7622 .

Kalajdžić, Milan, Mijatović, Luka, "Energy Efficiency Scores of Ro-Pax ferries in the Mediterranean" in I. INTERNATIONAL MARITIME AND LOGISTICS CONGRESS - DELOK’23, September 22-23 - Proceedings Book (2023),
https://hdl.handle.net/21.15107/rcub_machinery_7622 .

TY  - JOUR
AU  - Kalajdžić, Milan
AU  - Momčilović, Nikola
AU  - Mijatović, Luka
PY  - 2023
UR  - https://www.jms.ucg.ac.me/jms_archive/v24_1_2023/jms_24_01_2023_03.html
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7286
AB  - International Maritime Organization (IMO) and regional authorities have been gradually introducing decarbonization policies and regulations. Shipping sector’s primary response remains the reduction of the cruising speed. Other solutions can include hull optimization, application of energy saving devices, alternative fuels. Alternative fuels are still under the development and could significantly reduce emissions, through the application of batteries, hydrogen, ammonia, etc. However, domestic voyages by ferries have not been exposed to the regulations’ scrutiny. Nevertheless, in the regions such as the Bay of Kotor (Montenegro), protected by UNESCO, maritime transport is expected to follow environmental policies. In order to encourage the decarbonization of such regions, this paper offers a preliminary concept solution of an electric ferry for the Bay of Kotor with reduced onboard emissions. The concept is based on available data on the most energy demanding ferry in Bay of Kotor that has operated for the past decade. The ferry follows the short route suitable for the application of electric drive. Analysis of an operational profile and the ferry concept design parameters are presented, as well as the advantages and disadvantages of electric ferry proposal.
PB  - Journal of Maritime Sciences
T2  - Journal of Maritime Sciences
T1  - Decarbonizing the Bay of Kotor: Preliminary Electrification Concept of a Ferry
VL  - 24
DO  - 10.56080/jms230503
ER  - 

@article{
author = "Kalajdžić, Milan and Momčilović, Nikola and Mijatović, Luka",
year = "2023",
abstract = "International Maritime Organization (IMO) and regional authorities have been gradually introducing decarbonization policies and regulations. Shipping sector’s primary response remains the reduction of the cruising speed. Other solutions can include hull optimization, application of energy saving devices, alternative fuels. Alternative fuels are still under the development and could significantly reduce emissions, through the application of batteries, hydrogen, ammonia, etc. However, domestic voyages by ferries have not been exposed to the regulations’ scrutiny. Nevertheless, in the regions such as the Bay of Kotor (Montenegro), protected by UNESCO, maritime transport is expected to follow environmental policies. In order to encourage the decarbonization of such regions, this paper offers a preliminary concept solution of an electric ferry for the Bay of Kotor with reduced onboard emissions. The concept is based on available data on the most energy demanding ferry in Bay of Kotor that has operated for the past decade. The ferry follows the short route suitable for the application of electric drive. Analysis of an operational profile and the ferry concept design parameters are presented, as well as the advantages and disadvantages of electric ferry proposal.",
publisher = "Journal of Maritime Sciences",
journal = "Journal of Maritime Sciences",
title = "Decarbonizing the Bay of Kotor: Preliminary Electrification Concept of a Ferry",
volume = "24",
doi = "10.56080/jms230503"
}

Kalajdžić, M., Momčilović, N.,& Mijatović, L.. (2023). Decarbonizing the Bay of Kotor: Preliminary Electrification Concept of a Ferry. in Journal of Maritime Sciences
Journal of Maritime Sciences., 24.
https://doi.org/10.56080/jms230503

Kalajdžić M, Momčilović N, Mijatović L. Decarbonizing the Bay of Kotor: Preliminary Electrification Concept of a Ferry. in Journal of Maritime Sciences. 2023;24.
doi:10.56080/jms230503 .

Kalajdžić, Milan, Momčilović, Nikola, Mijatović, Luka, "Decarbonizing the Bay of Kotor: Preliminary Electrification Concept of a Ferry" in Journal of Maritime Sciences, 24 (2023),
https://doi.org/10.56080/jms230503 . .

TY  - CONF
AU  - Kalajdžić, Milan
AU  - Momčilović, Nikola
AU  - Mijatović, Luka
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6730
AB  - In order to address the environmental concerns and reduce the air pollution from traditional diesel engines, maritime authorities have been gradually introducing the energy efficiency requirements for ships. Mostly, the shipping sector response consists of measures such as power reduction, application of various energy saving devices and alternative fuels. The latter presents the radical and an efficient way to almost completely reduce onboard emissions, by installing the propulsion systems powered by batteries (electric drive), hydrogen, ammonia, or other “carbon-free” sources of energy. Therefore, this paper presents an early-stage design of the electrification concept of the ferry regularly navigating in the Bay of Kotor between the ports of Kamenari and Lepetani. Such short-routed operation can be practical for the application of electric drive with batteries, as a sole source of power. Preliminary design methodology for the calculation of the ship’s operational profile is presented, along with the electrification concept for the ferry on the specific route. Findings showed that the proposed design can be viable for the small-scale Ro-Ro navigation in the Bay of Kotor aquatorium, especially given the UNESCO World Heritage site status of the area.
PB  - Faculty of Maritime Studies in Kotor, University of Montenegro
C3  - Book of Abstracts - 2st Kotor  International Maritime Conference (KIMC 2022), Kotor, Montenegro,  2022.
T1  - EARLY-STAGE ELECTRIFICATION CONCEPT OF A FERRY FOR THE BAY OF KOTOR
EP  - 18
SP  - 18
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6730
ER  - 

@conference{
author = "Kalajdžić, Milan and Momčilović, Nikola and Mijatović, Luka",
year = "2022",
abstract = "In order to address the environmental concerns and reduce the air pollution from traditional diesel engines, maritime authorities have been gradually introducing the energy efficiency requirements for ships. Mostly, the shipping sector response consists of measures such as power reduction, application of various energy saving devices and alternative fuels. The latter presents the radical and an efficient way to almost completely reduce onboard emissions, by installing the propulsion systems powered by batteries (electric drive), hydrogen, ammonia, or other “carbon-free” sources of energy. Therefore, this paper presents an early-stage design of the electrification concept of the ferry regularly navigating in the Bay of Kotor between the ports of Kamenari and Lepetani. Such short-routed operation can be practical for the application of electric drive with batteries, as a sole source of power. Preliminary design methodology for the calculation of the ship’s operational profile is presented, along with the electrification concept for the ferry on the specific route. Findings showed that the proposed design can be viable for the small-scale Ro-Ro navigation in the Bay of Kotor aquatorium, especially given the UNESCO World Heritage site status of the area.",
publisher = "Faculty of Maritime Studies in Kotor, University of Montenegro",
journal = "Book of Abstracts - 2st Kotor  International Maritime Conference (KIMC 2022), Kotor, Montenegro,  2022.",
title = "EARLY-STAGE ELECTRIFICATION CONCEPT OF A FERRY FOR THE BAY OF KOTOR",
pages = "18-18",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6730"
}

Kalajdžić, M., Momčilović, N.,& Mijatović, L.. (2022). EARLY-STAGE ELECTRIFICATION CONCEPT OF A FERRY FOR THE BAY OF KOTOR. in Book of Abstracts - 2st Kotor  International Maritime Conference (KIMC 2022), Kotor, Montenegro,  2022.
Faculty of Maritime Studies in Kotor, University of Montenegro., 18-18.
https://hdl.handle.net/21.15107/rcub_machinery_6730

Kalajdžić M, Momčilović N, Mijatović L. EARLY-STAGE ELECTRIFICATION CONCEPT OF A FERRY FOR THE BAY OF KOTOR. in Book of Abstracts - 2st Kotor  International Maritime Conference (KIMC 2022), Kotor, Montenegro,  2022.. 2022;:18-18.
https://hdl.handle.net/21.15107/rcub_machinery_6730 .

Kalajdžić, Milan, Momčilović, Nikola, Mijatović, Luka, "EARLY-STAGE ELECTRIFICATION CONCEPT OF A FERRY FOR THE BAY OF KOTOR" in Book of Abstracts - 2st Kotor  International Maritime Conference (KIMC 2022), Kotor, Montenegro,  2022. (2022):18-18,
https://hdl.handle.net/21.15107/rcub_machinery_6730 .