Motor Boat Research Articles

ВДОСКОНАЛЕННЯ ПОШУКУ СКУПЧЕНЬ РИБИ ЗАСОБАМИ КІНЕМАТИЧНОГО ПРОЕКТУВАННЯ

The article deals with sea and river commercial fisheries. It describes a possible way to increase the efficiency of the movements of fishing vessels when they are looking for accumulations (school) of fish. The improvement of the search movements of ships is based on the use of means and methods of kinematic design, which is part of modern descriptive geometry. In kinematic design, all design components are in independent spatial displacements at different speeds. In this case, the created mathematical dependencies make it possible to determine the coordinates of the spatial displacements of the design object, which here is the wanted accumulation (school) of fish. The basis of the proposed method for searching fish concentrations is the use of an additional search floating facility, such as a boat or motor boat. The fishing vessel and the auxiliary boat are equipped with search sonar equipment. A fishing vessel in the water area of the search area can drift or move at a slow speed along a given trajectory, and the search boat can accompany it and move around it along a circle of a certain radius, due to the range of the search equipment. The aim of the study was to create a methodology for increasing the efficiency of the movement of fishing vessels in search of fish concentrations. Among the main objectives of the study was the development of mathematical dependencies for determining the coordinates of the identified fish aggregations and creating a methodology for an approximate estimate of the volume of fish in its identified aggregation. The advantages of the proposed methodology for improving the search movements of fishing vessels are: - reduction of fuel consumption for the movement of the vessel in the water area of the investigated fish search area; - levelling by the kinematic design of the negative impact of false sonar signals reflected from the bottom of the reservoir. Keywords: marine fishing, fish search, sonar, sketch geometry, kinematic design, search trajectory, mathematical dependence.

Inventory Of Small-Scale Fishing Units In Tanjung Solok Village, Kuala Jambi District, Tanjung Jabung Timur Regency

This study aims to identify and inventory the fishing units in Tanjung Solok Village, Kuala Jambi District, Tanjung Jabung Timur Regency. This research was conducted in June-July 2021. The method used in this study is a survey method, with direct observations in the field and conducting interviews with fishermen and noting the fishing units used by fishermen in Tanjung Solok Village. The sampling method is a census of 106 fishermen who have fishing units and domiciled in Tanjung Solok Village. The data collected in this study include general biographical data of fishermen, ships or boats used to catch fish, fishing gear used, and catches while fishing. The data analysis used in this research is Descriptive Data Analysis. Fishermen in Tanjung Solok are aged between 20 and 70 years with elementary, junior high and high school education and work as main fishermen, fishermen and side fishermen. The fishing vessels used are classified as outboard motor boats, non-motorized boats and motor boats made of fiber or wood with ship sizes of 1 to 4 GT. There are 7 types of fishing gear used, namely Gillnet, Mini Trawl, Pull Trawl, Splint, Rawai, Net, and Clam Stick and are dominated by fishing gear that is easy to operate and cheap. The most widely used fishing gear is the Gillnet. The fishing area for Tanjung Solok fishermen is around the territorial sea which is no more than 12 miles from the coastline because the fishing units are classified as small-scale. The fish caught by fishermen vary from shrimp and gulama fish, happy fish, side fish and shellfish.

A Compact Monopole Antenna for Underwater Acoustic Monitoring Beacons.

Protected wetlands such as deltas, lakes or rivers provide a sanctuary for many endangered species. In order to protect these areas from illegal human interventions, it is necessary to monitor the unauthorized entrance of motor boats. In order to mitigate such an impact, we have developed a network of floating beacons for underwater acoustic monitoring, using LoRa communication modules operating at 433 MHz. Such beacons should be equipped with compact antennas. In this paper, we use a genetic algorithm approach to design the compact, monopole antennas required for the beacons; size constraints would apply not only to the radiating element but also to the ground plane. Although the antenna input is unbalanced, such a small ground plane may yield common mode currents on the antenna feeder, which distort the radiation pattern of the antenna. In order to investigate the effect of the common mode currents, we developed a distance averaging method, while, for characterizing the antenna, we used a single-antenna method. For the experimental validation of the system in real conditions, a continuous monitoring of the lake was carried out. During the monitoring, multiple events generated by incursions of motor boats were successfully detected and recorded.

Factors Influencing the Willingness to Pay in Yachting Tourism in the Context of COVID-19 Regular Prevention and Control: The Case of Dalian, China

This study attempts to construct a framework of factors affecting the yachting tourists’ willingness to pay (WTP) in the context of COVID-19 regular prevention and control in Dalian, China. Relying on the framework of the extended theory of planned behavior (TPB), perceived external institutional and destination attribute factors are introduced to enhance the prediction of WTP. The results of the multivariate ordinal logistic regression model show that significant factors affecting yachting tourists’ WTP are income, education, past consumption experience, attitudes, destination attributes, and perceived behavior control. In addition, different factors affect the WTP of tourists who prefer motor boats and non-motor boats.

Overview Equipment Safety Traditional Motor Boats at Tigaras Harbor Regency Simalungun North Sumatra Province

Ferry port Tigaras is in the district Simalungun Province Sumatra North is one harbour crossing on Lake Toba to to Island Samosir . Equipment safety passenger on traditional motorboat is things to do filled with all ships operating at the ferry port Tigaras at the moment To do cruise good from life jacket, lifebouy , rocket parachute, tools extinguisher fire and rope discharge 30 m. Study this aim for knowing a lot traditional motor boats that have not been complete equipment safety and quantity percentage tool safety met above traditional motorboat on the track Tigaras-simanindo.For Methodology research used is observation directly in the field , interviews , library / documentation. Analysis used is analysis in the form of Gap Analysis as comparison Among existing state with secured situation. Based on Regulation Director General Communication Land Number : 3424/AP.402/DRJD/2020 About River And Lake Ships. Based on analysis the obtained conclusion that traditional motorboat on the track Tigaras-Simanindo not yet complete equipment safety in accordance with regulations governing and for Level of compliance tool safety on board traditional operating on the lake track Tigaras-Simanindo namely Life Jacket 35%, Life bouy 6%, Firefighter 0% fire , 100% for rope waste 30 m all boat already equips and 33% for Rocket Parachute.

The Characteristics and Lifestyle of the Bharathava People in the Novel "Alaivaik Karai"

According to the title of lower class people's history in literary works, Mrs. Rajam Krishnan's fictional painting "Alaivaik Karayil" is a biographical reference to the people of the fishery and Bharathavar clans, the lower class built along the coast at the border of the town. Sangam literature mentions Bharathavas as a division of Neithal (sea and land around the sea) people in Tamil Nadu. Living along the coast, the livelihood of the fishermen is based on the resources of the sea. The community of fishermen is a race that has not left the lap of the ocean mother who provides them life without settling in cities in search of livelihood. Toiling in the deep sea, enduring the vagaries of nature, drifting ashore, getting caught in nets, not being paid according to labour—there is no sure income for the labourer who is toiling in the sea. The scales of sharks are called thuvi. It is more valuable than fish. There is a compulsion to pay the thuvi and other things as a compulsory tax to the temple of Matha. Without trying to eliminate ignorance, addiction to drugs and sensuality, middleman troubles, the dominance of churches, resorting to drugs to forget life's dissatisfactions and disappointments, resistance to modern mechanised boats and the mechanised boat industry, etc. are considered to be the fuel of their greed. The status of referring to the power boat as a "Visapadaku", religious conversion, the pious fishermen who say "Mary is merciful," the religious fishermen, the inability to give dowry for the virgins, and conversion to Hinduism to escape the tax-extorting domination of the religious priests are implied. The fact that the author uses the same speech dialect after studying their speech reflects her fascinating experience. It has been shown that there are separate Tamil words that are not in our colloquial language today and that there is a separate case language that is a mixture of Portuguese, Sinhala, and Malayalam languages. The essence of this review article "Alaiyoram" is to explore the precious matters like pearls buried in the novelty in various situations.

Sustainability and Resilience of Indigenous Siberian Communities under the Impact of Transportation Infrastructure Transformation

Transport provision in remote territories is one of the most important factors in maintaining the sustainability of socio-economic and ecological systems. Indigenous peoples of Siberia have always been mobile using diverse traditional ways across the taiga. During the Soviet period, the transition to settled life, along with technological development and the emergence of new modes of transport, such as off-road cars, snowmobiles, and motor boats, significantly affected the level of population mobility, including remote areas where people are engaged in traditional nature management. With the collapse of the Soviet Union, there were significant changes and reductions in the subsidies of transportation systems for remote terrains that made them isolated. Transport connectivity has been realized through rare plane flights (once a month or less) or by cars on dirt roads (actually off-road) that take several days of travel. Siberian territories rich with natural resources, low population density, and weak infrastructure might be attractive for mining companies. Being difficult to access not only for the local population, but also for industrial companies, the territories imply the allocation of a significant share of road construction and transport costs in the cost items of miners and processors. The problems of sustainability and resilience of the indigenous peoples of Siberia require special attention when restructuring transport communications, but they have practically not been studied before. Methods of in-depth and group interviews with local residents were used. Based on comparative geographic and statistical analysis and generalization of data, network and problem approaches applied for various sources and field materials (including in-depth and group interviews), the factors of sustainability and resilience, which the indigenous communities of three remote Siberian territories pin their hopes on in the context of the transformation of transportation infrastructure, have been identified. If geographic remoteness remains an unchanged fact, the expansion of desired transport accessibility (mainly due to investments by industrial companies) is associated by locals with the possibility of additional income related to provision of services, the emergence of new types of employment of the population that have not been observed before, and the implementation of new transport modes to support traditional activities.

An Approaching Motor Boat Induces Stress-Related Behaviors in Proboscis Monkeys (Nasalis larvatus) Living in a Riparian Area

Primate ecotourism is a fast-growing tourism sector that may have a negative effect on wildlife. In riparian areas, tourists can conveniently reach primates via motor boats, but no study has directly examined whether such boats cause stress in primates. Our goal was to test whether the approach of a motor boat induces stress-related and other behaviors in proboscis monkeys (Nasalis larvatus), an Endangered species. We studied six one-male, multifemale groups living in a remote riparian area in Sabah, Malaysia, and conducted an experiment by approaching the monkeys in a motor boat by using three conditions with different speeds and travel distances (fast-close, slow-close, and slow-far conditions; 7-8 subjects per condition). For each condition, we compared stress-related behaviors before the boat approach with after the boat started approaching. Feeding, allogrooming and aggression were similarly examined, respectively. We also observed the monkeys’ behaviors at other times to examine age-sex classes differences in vigilance, social proximity, allogrooming, aggression and play (87 subjects). In the experiment, subjects displayed stress-related behaviors for longer in the fast-close and slow-close conditions once the boat started approaching than before the boat approach. The subjects also reduced feeding in the fast-close condition after the boat started approaching. In our observational study, males were more vigilant than females—a behavior that is likely to relate to male-male competition and group protection. This study provides evidence that even a single motor boat moving slowly, with humans behaving calmly, may negatively affect primate behavior and induce stress—an impact that is likely to be larger with tourist boats. Our study also shows that using conditions comparable to the slow-far condition (speed of 3.6 km/hr; no closer than 60 m), where no impact was observed, may help with to develop guidelines for primate tourism in riparian areas. Future research that examines the impact of boats on other primates is needed.

Taxocene of pelagic copepods in coastal waters of the Argentine Islands, West coast of the Antarctic Peninsula, in 2021—2022

Pelagic ecosystems are changing in response to the recent climate warming. The mesozooplankton and copepods in particular are important indicators of the state of aquatic ecosystems. Zooplankton in Antarctic waters has been monitored regularly to study biodiversity, food chains, and ecological cycles. In 2021–2022, pilot study of mesozooplankton groups was added to the marine biological research of the Ukrainian Antarctic Program. The preliminary information was obtained on the taxonomic composition and functional characteristics of the taxocene of copepods in the coastal waters of the Argentine Islands. The observed diversity is strongly influenced by the conditions and the available sampling gear. The samples were collected from motor boats using three kinds of plankton nets depending on the weather and ice conditions. From June to February, the predominant species were the common coastal species and species adapted to feeding in the cold upper layers in winter. Trawling samples collected from March to late May best illustrate the seasonal dynamics of the mesozooplankton communities’ temporary and permanent components. Twelve copepods from eight families were identified to the species level. Most constituent species were omnivorous (7 species), followed by detritophages (3 species). The community’s phytophages and predators were locally common. This trophic distribution likely is evidence that they were collected in the surface layer, which is not always favorable for feeding. Therefore, the percentage of omnivorous opportunists was relatively high. Some of the sampled material requires molecular-biological analysis, especially the copepods from the Oncaea Philippi, 1843 and Triconia Böttger-Schnack, 1999 genera. The older copepodites, in particular the adult specimens, were rarely collected. The state of the material was not ideal for unambiguous identification by morphological features. Comparing the results with the latest research on the west coast of the Antarctic Peninsula, we see that the species composition is highly similar (around 80%), except for the deep-water taxa.

ФАУНА И НАСЕЛЕНИЕ МОРСКИХ ПТИЦ У ПОБЕРЕЖЬЯ ЮЖНО-КАМЧАТСКОГО ПРИРОДНОГО ПАРКА В ЛЕТНИЙ СЕЗОН

The study was conducted in June – July 2016 and 2021 on the southeastern coast of Kamchatka. Birds on line transects and on routes along the coastline were taken into account from the side of a small vessel (boat) and on a motor boat. We recorded 32 bird species, mainly alcids (34.4% of the species composition), larids (15.6%) and anatids (12.5%). The density of bird distribution in the water area was 25.5 individuals/km2 on average. In terms of numbers, the tubenoses and alcids (42.9% each) occupied the dominant position on the accounting transects remote from the land, and on the routes close to the shore – larids (61.5%) and alcids (23.0%). The total number of birds within the boundaries of the coastal water area of 1 280 km2 is approximately 40 thousand individuals. The basis of the population (about 60%) consists of eight species nesting in this area, each of which has more than 1 000 individuals (mainly tufted puffins and murres). The remaining 40% are species from other regions (short-tailed shearwaters migrating from the southern hemisphere, northern fulmars nesting on the neighboring territories and phalaropes during postnesting migrations).

Evaluation Of The Control And Prevention Of The Spread Of Corona Virus Disease (Covid-19) At Tigaras Port In 2021

Tigaras Port is managed by the North Sumatra Region II Land Transportation Management Center. Vessels operating at this port consist of 2 motorized crossing ships, namely KMP. North Sumatra I and KMP. North Sumatra II, as well as 17 traditional motor boats. Tigaras Port is one of the ports that has a busy trip schedule and is crowded with visitors every day. The world is currently being hit by a disease epidemic due to Corona Virus Disease (Covid-19) and the epidemic has had a major impact, including to the transportation sector. However, there is no maximum control effort and the level of compliance with the application of health protocols at Tigaras port, both from the passenger sector, transportation facilities operators, and transportation infrastructure operators is still very minimal.

Michael Thompson, MD

Michael Thompson, MD

A Review on Solar Powered Boat Design

In recent years, numerous advancements occurred in the renewable energy sector. One of the promising area where usage of solar energy has been implemented is the solar-powered boat. Solar powered boat or all electric boat brings the opportunity to decrease greenhouse emissions and shift towards utilization of renewable and sustainable energy. In this paper the research work carried out regarding the design for deployment of solar energy on boat has been presented.

Changes to an urban marina soundscape associated with COVID-19 lockdown in Guadeloupe

In 2020, the COVID-19 pandemic led to government-enforced limits on activities worldwide, causing a marked reduction of human presence in outdoors environments, including in coastal areas that normally support substantial levels of boat traffic. These restrictions provided a unique opportunity to quantify the degree to which anthropogenic noise contributes to and impacts underwater soundscapes. In Guadeloupe, French West Indies, a significantly lower number of motor boats were recorded in the vicinity of the major urban marina during the peak of the first COVID-19 lockdown (April–May 2020), compared with the number recorded post-lockdown. The resumption of human activities at the end of May was correlated with a maximum increase of 6 decibels in the ambient noise level underwater. The change in noise level did not impact daily sound production patterns of vocal fishes, with increased activity at dusk seen both during and after the lockdown period. However, during the lockdown vocal activity was comprised of a reduced number of sounds, suggesting that anthropogenic noise has the potential to interfere with vocalization behaviours in fishes.

Diversity of Fishing Equipment for Fishermen in Gunung Kijang District, Bintan Regency

The increase in fishery production in Gunung Kijang District cannot be separated from fishing activities. The use of fishing gear that has the potential to damage the environment is assumed to be caused by public ignorance about the dangers of these tools. However, information about the diversity of types of fishing gear used by fishermen in Gunung Kijang District is still scarce. The purpose of the preparation of this scientific article is to provide information about the types of fishing gear used by the community in Gunung Kijang District, Bintan Regency. The preparation of this scientific article was carried out in April 2021 in Gunung Kijang District using a descriptive analysis based on a literature review using secondary data as a source of information. The fishing gear used by Gunung Kijang fishermen include mackerel nets, tuna, stingrays, corals, crabs, floating nets, motor boat charts, fish traps, crab traps, oval crab traps, fishing rods, longline fishing rods, spears, fish guns.

Responsibility of the Captain in Transporting Goods at Sea

In the provisions of Article 137 Paragraph (1) and (2) Law no. 17/2008 both the Grosss Tonnage 35 and motor boats Motor boats are less than Gross Tonnage 35 as well as for boats traditionally less than the Gross Tonnage 105, I insist on the point states: The captain is the leader on the ship who owns law enforcement authority and are responsible for safety, security and order of ships, and cargo goods obligation. In another provision it is also stated that the master is the leader of the ship, who every certain event must take a stand and act in accordance with skill, precision and wisdom,as required to carry out their duties (Article 342 paragraph (1)KUHD). As the leader of the ship, the master must be responsible all his actions against the ship and its cargo in all events that happens in the sea. From that the legislators gave a burden responsibility to the master as regulated in Article 342 paragraph (2) KUHD, that is, if the action is committed in that position is intentional or negligent, which causes damage to other people.The breadth obligations given by law, in the implementationtransportation in terms of the responsibility of the Ship Leader / Master to safety, security and order of ships and sailors in essence boils down to the interests of the cargo as the agreed object which is the obligation of the carrier. The obligation that arises from its existence an agreement as intended gives birth to responsibilities implicitly it is the responsibility of the transportation company. The formulation of these provisions includes the extent of the obligations given by Constitution. If you listen to the process of organizing deep transportation regarding the responsibility of the Ship Leader / Master for safety, security and order of ships and sailors basically boils down to in the interest of cargo as the agreed object is the obligation of the carrier.

PERFORMANCE OF MINI PURSE SEINE AND CANTRANG IN COASTAL FISHERY PORT (PPP) TASIK AGUNG, REMBANG REGENCY

The fishing gear that is mostly used by fishermen at the Coastal Fishery Port (PPP) Tasik Agung, RembangRegency are mini purse seines and cantrangs. The fishing effort using fishing gear has a positive impact on the welfare of local fishermen. The purpose of this study was to determine the performance of purse seine and cantrang fishing gear at PPP Tasik Agung, Rembang Regency based on specifications, fishing area and fishing season. Data collection was carried out through a survey method. The selection of fishermen as examples is carried out by accidental sampling to respondents who are deemed worthy of being accepted as sources of data/information. Processing and data analysis is done by using qualitative descriptive analysis. The results showed that the specifications of the mini purse seine fishing gear which are commonly used by fishermen with a fishing fleet of motor boats with a size of 11-20 GT generally have a length from the tip of the left wing to the tip of the right wing of about 250 m, while for ships with a size of 20-30 GT using mini purse seine fishing gear with a length of 360 m. Cantrang nets have different sections, where each section has a thread size, eye size, number of meshes, and rope size and length. Fishing operations in the waters of the Java Sea to the waters of Bawean Island (12 miles to the west and north from the coast of Bawean and Karimun Jawa) to the waters of Kalimantan. The peaks of the cantrang and mini purse seine fishing gear are different.Keywords: Cantrang, Catching season, Mini purse seine, PPP Tasik Agung

PERFORMANCE OF MINI PURSE SEINE AND CANTRANG IN COASTAL FISHERY PORT (PPP) TASIK AGUNG, REMBANG REGENCY

The fishing gear that is mostly used by fishermen at the Coastal Fishery Port (PPP) Tasik Agung, RembangRegency are mini purse seines and cantrangs. The fishing effort using fishing gear has a positive impact on the welfare of local fishermen. The purpose of this study was to determine the performance of purse seine and cantrang fishing gear at PPP Tasik Agung, Rembang Regency based on specifications, fishing area and fishing season. Data collection was carried out through a survey method. The selection of fishermen as examples is carried out by accidental sampling to respondents who are deemed worthy of being accepted as sources of data/information. Processing and data analysis is done by using qualitative descriptive analysis. The results showed that the specifications of the mini purse seine fishing gear which are commonly used by fishermen with a fishing fleet of motor boats with a size of 11-20 GT generally have a length from the tip of the left wing to the tip of the right wing of about 250 m, while for ships with a size of 20-30 GT using mini purse seine fishing gear with a length of 360 m. Cantrang nets have different sections, where each section has a thread size, eye size, number of meshes, and rope size and length. Fishing operations in the waters of the Java Sea to the waters of Bawean Island (12 miles to the west and north from the coast of Bawean and Karimun Jawa) to the waters of Kalimantan. The peaks of the cantrang and mini purse seine fishing gear are different.Keywords: Cantrang, Catching season, Mini purse seine, PPP Tasik Agung

Personal Watercraft Incident Court Decisions: The Plaintiff’s Odds?

A personal watercraft (PWC) is a vessel that uses an inboard motor powering a water jet pump as a source of power and is operated by a person sitting, standing, or kneeling. Maneuvering a PWC is different from operating a motor vehicle or boat. An obstacle cannot be avoided by slowing down and turning the watercraft; throttle power is required to turn or maneuver the PWC. The watercraft stops only by drifting or turning sharply. The study examined sixty court decisions published in LexisNexis databases of the United States over the last decade. Cases included individuals injured while operating a PWC as a driver, passenger, or as a result of contact with a watercraft. A content analysis identified items to be used in the study. Crosstab and logistic regression analyses were used to identify demographic information and the characteristics of those who succeeded in a court of law. One-third of the cases were successful; adults, males, and the party who sustained a severe injury were more successful in a court of law with the exception of the statistically significant factors (high risk maneuvers and sharp turns). Among the additional results, we should be aware that insurance companies may not pay; additionally, it is unwise to loan a PWC to a female who has no experience.

Warren Lewis: The Soldier Sailor

In the years immediately after his retirement from the Royal Army Service Corps on 21 December 1932, Captain Warren ‘Warnie’ Lewis expended most of his energy compiling the Lewis Papers, an extensive family archive that, by almost any measure, is an exceptional accomplishment. Shortly after finishing this massive yet pleasurable undertaking, Warnie turned to an even more delightful activity: sailing the waterways in and around Oxford and Cambridge on the Bosphorus, a small cabin cruiser he had specially built, therein realizing a life-long passion for ships and boats and reaching back to the childhood worlds of Animal Land and Boxen (shared with his younger brother), upon whose waters the first Bosphorus sailed. From 1936 until the outbreak of World War II, Warnie spent many days on his second Bosphorus, enjoying countless hours of relative freedom and personal satisfaction. This essay explores Warnie's days aboard his ‘ditchcrawler’, primarily through the lens of the eight essays he published in The Motor Boat and Yachting magazine in the late 1930s.