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Volume 224 (2022): Issue 1 (March 2022)

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Volume 220-221 (2020): Issue 1-2 (June 2020)

Volume 219 (2019): Issue 4 (December 2019)

Volume 218 (2019): Issue 3 (September 2019)

Volume 217 (2019): Issue 2 (June 2019)

Volume 216 (2019): Issue 1 (March 2019)

Volume 215 (2018): Issue 4 (December 2018)

Volume 214 (2018): Issue 3 (September 2018)

Volume 213 (2018): Issue 2 (June 2018)

Volume 212 (2018): Issue 1 (March 2018)

Volume 211 (2017): Issue 4 (December 2017)

Volume 210 (2017): Issue 3 (September 2017)

Volume 209 (2017): Issue 2 (June 2017)

Volume 208 (2017): Issue 1 (March 2017)

Volume 207 (2016): Issue 4 (December 2016)

Volume 206 (2016): Issue 3 (September 2016)

Volume 205 (2016): Issue 2 (June 2016)

Volume 204 (2016): Issue 1 (March 2016)

Journal Details
Format
Journal
eISSN
2720-4286
First Published
30 Mar 2016
Publication timeframe
1 time per year
Languages
English

Search

Volume 214 (2018): Issue 3 (September 2018)

Journal Details
Format
Journal
eISSN
2720-4286
First Published
30 Mar 2016
Publication timeframe
1 time per year
Languages
English

Search

8 Articles
Open Access

An underwater spoiler on a warship: why, when and how?

Published Online: 30 Sep 2018
Page range: 5 - 23

Abstract

Abstract

There are a lot of energy saving devices for ships on the market, but few have seen wide adoption on naval ships, with one exception: the bulbous bow. The bulbous bow was developed for naval ships in the early 20th century and is now widespread on a variety of ship designs. Many have wondered if the effect of the bulbous bow — reducing the resistance of a ship by reducing the bow wave — could be replicated somehow at the stern — by reducing the stern wave. This is exactly what is done by a novel and patented energy saving device called Hull Vane®.

Invented by Dutch hydrodynamicist Dr Peter van Oossanen for an America’s Cup sailing yacht in the early 21st century, research over the years has shown that this wing-shaped appendage works best on ships that combine a relatively high displacement with a relatively high top speed requirement — even if most sailing hours are done at half speed. Examples are certain offshore vessels, superyachts, patrol vessels and naval ships. On offshore patrol vessels, the resistance reduction from the Hull Vane® ranges typically from 10 to 20% over the entire useful speed range.

In this paper, the working principles of the Hull Vane® will be described to give a better under-standing of the device. An overview will be given of the work carried out on naval ships and coastguard ships (25 to 142 m), based on Computational Fluid Dynamics studies, model tests and full-scale applications. The question ‘Why?’ will be answered by translating the hydrodynamic effects to concrete capability improvements for naval ships: a lower fuel consumption, a longer range, reduced signature, a higher top speed and improved seakeeping.

The question ‘When?’ will zoom in on whether a Hull Vane® is something to be included in a newbuild or if it is something to be retrofitted to an existing ship. Finally the answer to the question ‘How?’ will explain the process of either integrating a Hull Vane® in a newbuild project or retrofitting it during a midlife upgrade of an existing ship.

Keywords

  • hydrodynamics
  • naval ships
  • efficiency
  • energy saving
  • seakeeping
  • capabilities
Open Access

Methods for determining mechanical losses of marine diesel engines

Published Online: 30 Sep 2018
Page range: 25 - 38

Abstract

Abstract

The paper presents based on literature critical evaluation of commonly known methods for determining the mechanical losses of a piston engine. Their advantages and disadvantages were pointed out also the possibility of their use in a marine propulsion system was assessed.

Keywords

  • mechanical losses
  • marine diesel engine
Open Access

An operational calculus model for the central difference and exponential-trigonometric and hyperbolic fibonacci sequences

Published Online: 30 Sep 2018
Page range: 39 - 62

Abstract

Abstract

In the paper, there has been constructed such a non-classical Bittner operational calculus model, in which the derivative is understood as a central difference Dn{x(k)}:= {x(k+n)–x(k-n)}. The discussed model has been generalized by considering the operation Dn,b{x(k)}:= {x(k+n)–bx(k-n)}, where b∈𝕔\{0}. In the D1-difference model exponential-trigonometric and hyperbolic Fibonacci sequences have been introduced.

Keywords

  • operational calculus
  • derivative
  • integrals
  • limit conditions
  • central difference
  • Fibonacci sequences
Open Access

Analysis of technologies for producing composites with polyester-glass recyclate

Published Online: 30 Sep 2018
Page range: 63 - 73

Abstract

Abstract

The aim of the article was to present selected methods for the production of layered composites in the aspect of the additive in the form of polyester-glass recyclate. The polyester-glass recyclate was obtained from the original composite material from which the ship’s hull was made in Poland in the 1980s. The article presents the technology of processing polyester-glass waste in order to obtain recyclate. The methods of manual lamination, vacuum bag method and vacuum infusion were described successively. The advantages and disadvantages of particular technologies have been presented in terms of the possibility of their use in the production of polyester-glass recycled composites. From the described and verified technologies, the vacuum bag method can be the most advantageous for composites with recyclate.

Keywords

  • composites
  • manual lamination
  • vacuum bag method
  • vacuum infusion
Open Access

Radio link system solutions for mobile platforms operatingin sea environment

Published Online: 30 Sep 2018
Page range: 75 - 86

Abstract

Abstract

In this paper radio link system solutions operating in 300 MHz — 3000 MHz range and sea environment were described. Solutions with more than one frequency and wave propagation models for horizontal not more than 50 km and far range were described. In the paper the results of actions taken design and construction solutions adopted were presented, aimed to contribute to ensure the reliability of the system, among other things, by implementing mechanisms for collecting and processing information. This solutions allow resources management to automatically adjust the transmission parameters configuration to the bitrate and range requirements. Available configurations can be extended with active part and electronic beam steering with one or more beams. The paper describes antenna systems ability of transmission parameters adaptation to get the range required.

Keywords

  • radio link budget
  • marine radio communication
  • wave propagation model at sea environment
  • antenna array
  • phase-shift beam control
  • sectorization
  • safety at sea
Open Access

Functioning of PHI-CS (Polish Harbors Information & Control System) and the system for the exchange of information and safety in the national marine safety system

Published Online: 30 Sep 2018
Page range: 87 - 108

Abstract

Abstract

Increasing security in Polish maritime areas is not only a priority for maritime administration, but all users of this zone. The article proves the general assumptions of the implementation of the National Maritime Safety System as well and the method of implementation of its individual elements. Detailed system information was included PHI-CS and Information Exchange System and Sailing Safety. An attempt was made to investigate the scope of modernization of the System of Information and Navigation Safety System. The article describes elements: the national Safe Sea Net system, rules of passenger registration, databases, ICT connections.

Keywords

  • NMSS
  • Safe Sea Net system
  • PHI-CS
  • Information Exchange and Navigation Safety System
Open Access

Capabilities to combat helicopters by warships of Polish Navy in the light of the development of active systems to counteract sets manpads

Published Online: 30 Sep 2018
Page range: 109 - 136

Abstract

Abstract

The article presents the analysis of the threats to ships of the Polish Navy resulting from the implementation systems of active neutralization for missiles of MANPADS (e.g. Grom, Igla, Mistral) to the armed forces of the Russian Federation.

The paper describes the most popular sea anti-aircraft missile sets based on MANPADS missiles and the capabilities of Russian multi-sensor systems for protection of Vitebsk class helicopters and aircraft (President-S). The article contains conclusions from the analysis of the capabilities of weapon systems and active disruption systems in the confrontation of a present ship with a modern combat helicopter and proposals for solving this problem by means of the diversification of missile of anti-aircraft systems.

Keywords

  • marine combat systems
  • safety and security of navigation
  • multi-sensor MANPADS counteraction systems
  • armament and specialist equipment
  • rocket self-defence systems
Open Access

An automated module of self-defence and masking of naval vessels of the Polish Navy with the use of miniature rocket missiles caliber 70 and 40 mm

Published Online: 30 Sep 2018
Page range: 137 - 160

Abstract

Abstract

This article is an attempt to interest the subjects associated with maritime technology — in the possibilities of increasing the safety of Polish Navy ships (or civilian ships), which may be threatened by attacks of maneuvering missiles and drones moving at low altitude at high speed. The concept proposed by the team was initially verified in simulation tests and the obtained results of these studies indicate that the automated missile self-defence system based on guided and unguided missiles with caliber 40 mm and 70 mm, can be an effective means of self-defence (even the smallest vessels). Small dimensions and mass as well as simplicity of use and reliability of this weapon system allow to believe that 40 mm MLRS1 could also be used by special forces of Polish Navy in offensive operations (destruction of lightly armoured objects of surface or ground, vehicles, force, putting smoke screens, mine mines) to 2000 m. For that reason, the system is referred to by the team of implementers as ‘pocket rocket artillery’.

Keywords

  • marine combat systems
  • safety and protection of shipping
  • armaments and specialized equipment
  • port and critical infrastructure protection
  • utilities and specialized equipment
  • rocket systems of self-defence and ship’s masking
  • testing and certification of products in the field of defence and security of the Republic of Poland
8 Articles
Open Access

An underwater spoiler on a warship: why, when and how?

Published Online: 30 Sep 2018
Page range: 5 - 23

Abstract

Abstract

There are a lot of energy saving devices for ships on the market, but few have seen wide adoption on naval ships, with one exception: the bulbous bow. The bulbous bow was developed for naval ships in the early 20th century and is now widespread on a variety of ship designs. Many have wondered if the effect of the bulbous bow — reducing the resistance of a ship by reducing the bow wave — could be replicated somehow at the stern — by reducing the stern wave. This is exactly what is done by a novel and patented energy saving device called Hull Vane®.

Invented by Dutch hydrodynamicist Dr Peter van Oossanen for an America’s Cup sailing yacht in the early 21st century, research over the years has shown that this wing-shaped appendage works best on ships that combine a relatively high displacement with a relatively high top speed requirement — even if most sailing hours are done at half speed. Examples are certain offshore vessels, superyachts, patrol vessels and naval ships. On offshore patrol vessels, the resistance reduction from the Hull Vane® ranges typically from 10 to 20% over the entire useful speed range.

In this paper, the working principles of the Hull Vane® will be described to give a better under-standing of the device. An overview will be given of the work carried out on naval ships and coastguard ships (25 to 142 m), based on Computational Fluid Dynamics studies, model tests and full-scale applications. The question ‘Why?’ will be answered by translating the hydrodynamic effects to concrete capability improvements for naval ships: a lower fuel consumption, a longer range, reduced signature, a higher top speed and improved seakeeping.

The question ‘When?’ will zoom in on whether a Hull Vane® is something to be included in a newbuild or if it is something to be retrofitted to an existing ship. Finally the answer to the question ‘How?’ will explain the process of either integrating a Hull Vane® in a newbuild project or retrofitting it during a midlife upgrade of an existing ship.

Keywords

  • hydrodynamics
  • naval ships
  • efficiency
  • energy saving
  • seakeeping
  • capabilities
Open Access

Methods for determining mechanical losses of marine diesel engines

Published Online: 30 Sep 2018
Page range: 25 - 38

Abstract

Abstract

The paper presents based on literature critical evaluation of commonly known methods for determining the mechanical losses of a piston engine. Their advantages and disadvantages were pointed out also the possibility of their use in a marine propulsion system was assessed.

Keywords

  • mechanical losses
  • marine diesel engine
Open Access

An operational calculus model for the central difference and exponential-trigonometric and hyperbolic fibonacci sequences

Published Online: 30 Sep 2018
Page range: 39 - 62

Abstract

Abstract

In the paper, there has been constructed such a non-classical Bittner operational calculus model, in which the derivative is understood as a central difference Dn{x(k)}:= {x(k+n)–x(k-n)}. The discussed model has been generalized by considering the operation Dn,b{x(k)}:= {x(k+n)–bx(k-n)}, where b∈𝕔\{0}. In the D1-difference model exponential-trigonometric and hyperbolic Fibonacci sequences have been introduced.

Keywords

  • operational calculus
  • derivative
  • integrals
  • limit conditions
  • central difference
  • Fibonacci sequences
Open Access

Analysis of technologies for producing composites with polyester-glass recyclate

Published Online: 30 Sep 2018
Page range: 63 - 73

Abstract

Abstract

The aim of the article was to present selected methods for the production of layered composites in the aspect of the additive in the form of polyester-glass recyclate. The polyester-glass recyclate was obtained from the original composite material from which the ship’s hull was made in Poland in the 1980s. The article presents the technology of processing polyester-glass waste in order to obtain recyclate. The methods of manual lamination, vacuum bag method and vacuum infusion were described successively. The advantages and disadvantages of particular technologies have been presented in terms of the possibility of their use in the production of polyester-glass recycled composites. From the described and verified technologies, the vacuum bag method can be the most advantageous for composites with recyclate.

Keywords

  • composites
  • manual lamination
  • vacuum bag method
  • vacuum infusion
Open Access

Radio link system solutions for mobile platforms operatingin sea environment

Published Online: 30 Sep 2018
Page range: 75 - 86

Abstract

Abstract

In this paper radio link system solutions operating in 300 MHz — 3000 MHz range and sea environment were described. Solutions with more than one frequency and wave propagation models for horizontal not more than 50 km and far range were described. In the paper the results of actions taken design and construction solutions adopted were presented, aimed to contribute to ensure the reliability of the system, among other things, by implementing mechanisms for collecting and processing information. This solutions allow resources management to automatically adjust the transmission parameters configuration to the bitrate and range requirements. Available configurations can be extended with active part and electronic beam steering with one or more beams. The paper describes antenna systems ability of transmission parameters adaptation to get the range required.

Keywords

  • radio link budget
  • marine radio communication
  • wave propagation model at sea environment
  • antenna array
  • phase-shift beam control
  • sectorization
  • safety at sea
Open Access

Functioning of PHI-CS (Polish Harbors Information & Control System) and the system for the exchange of information and safety in the national marine safety system

Published Online: 30 Sep 2018
Page range: 87 - 108

Abstract

Abstract

Increasing security in Polish maritime areas is not only a priority for maritime administration, but all users of this zone. The article proves the general assumptions of the implementation of the National Maritime Safety System as well and the method of implementation of its individual elements. Detailed system information was included PHI-CS and Information Exchange System and Sailing Safety. An attempt was made to investigate the scope of modernization of the System of Information and Navigation Safety System. The article describes elements: the national Safe Sea Net system, rules of passenger registration, databases, ICT connections.

Keywords

  • NMSS
  • Safe Sea Net system
  • PHI-CS
  • Information Exchange and Navigation Safety System
Open Access

Capabilities to combat helicopters by warships of Polish Navy in the light of the development of active systems to counteract sets manpads

Published Online: 30 Sep 2018
Page range: 109 - 136

Abstract

Abstract

The article presents the analysis of the threats to ships of the Polish Navy resulting from the implementation systems of active neutralization for missiles of MANPADS (e.g. Grom, Igla, Mistral) to the armed forces of the Russian Federation.

The paper describes the most popular sea anti-aircraft missile sets based on MANPADS missiles and the capabilities of Russian multi-sensor systems for protection of Vitebsk class helicopters and aircraft (President-S). The article contains conclusions from the analysis of the capabilities of weapon systems and active disruption systems in the confrontation of a present ship with a modern combat helicopter and proposals for solving this problem by means of the diversification of missile of anti-aircraft systems.

Keywords

  • marine combat systems
  • safety and security of navigation
  • multi-sensor MANPADS counteraction systems
  • armament and specialist equipment
  • rocket self-defence systems
Open Access

An automated module of self-defence and masking of naval vessels of the Polish Navy with the use of miniature rocket missiles caliber 70 and 40 mm

Published Online: 30 Sep 2018
Page range: 137 - 160

Abstract

Abstract

This article is an attempt to interest the subjects associated with maritime technology — in the possibilities of increasing the safety of Polish Navy ships (or civilian ships), which may be threatened by attacks of maneuvering missiles and drones moving at low altitude at high speed. The concept proposed by the team was initially verified in simulation tests and the obtained results of these studies indicate that the automated missile self-defence system based on guided and unguided missiles with caliber 40 mm and 70 mm, can be an effective means of self-defence (even the smallest vessels). Small dimensions and mass as well as simplicity of use and reliability of this weapon system allow to believe that 40 mm MLRS1 could also be used by special forces of Polish Navy in offensive operations (destruction of lightly armoured objects of surface or ground, vehicles, force, putting smoke screens, mine mines) to 2000 m. For that reason, the system is referred to by the team of implementers as ‘pocket rocket artillery’.

Keywords

  • marine combat systems
  • safety and protection of shipping
  • armaments and specialized equipment
  • port and critical infrastructure protection
  • utilities and specialized equipment
  • rocket systems of self-defence and ship’s masking
  • testing and certification of products in the field of defence and security of the Republic of Poland

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