Trimaran Fishing Vessel Development: A Review of Vessel Power, Safety and Comfort Needs
Abstract
In general, fishing fleets operating in Maluku waters and managed by local entrepreneurs consist of mono hull fishing vessels (such as purse seines, etc.) and trimaran in chart form. These two types of fishing fleets have been known to the people of Maluku for a long time. However, these two types each have their advantages and limitations, for example, mono hull fishing boats have limited deck space and poor transverse stability, especially in bumpy sea conditions in extreme weather. While the trimaran type has better deck space and transverse stability than a mono hull ship, but because it is still in chart form, it has limited space. The shortcomings that exist in these two types of fishing fleets are coupled with the expertise or experience of fishermen which has minimal impact on the decrease in the catch and what is worse can be fatal to accidents and the sinking of ship arma. To increase the catch of fisheries, it is necessary to have a means and a reliable fishing fleet. This study aims to examine the development of trimaran fishing vessels in terms of the study of energy needs, safety and comfort for the captain and crew during fishing operations. The initial stage of this research begins with data analysis and the principal size of mono hull fishing vessels operating in Maluku waters, from this data the hull form of a trimaran vessel is designed with an area similar to or close to the area of a monohull fishing vessel operating in Maluku waters using maxsurf, then analyzed the calculation of obstacles. ship and stability to assess the energy needs and safety and comfort of the ship during fishing operations. This research is focused on analyzing the energy requirements, safety and comfort of the trimaran fishing vessel. The final result of this research is expected to be used as an alternative fishing boat to increase the fish catch of fishermen which will have an impact on the income and welfare of fishermen.
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Introduction
As a province where 92% of its total area is water, the marine and fisheries sector in Maluku Province is the main source of economic growth in the region. Capture fisheries potential in Maluku is recorded at 1.72 million per year. This has prompted the Indonesian government to designate Maluku as the “National Fish Barn.” In a global context, Maluku is an important part of the world's marine biodiversity, considering that this province has 76% of the world's coral species and 37% of the world's coral fish species.
Overfishing is one of the main threats to Maluku's fishery sector which includes the exploitation of shrimp and big-eye tuna, snapper, grouper, flying fish and albakora tuna. The lack of data availability, for example data related to small pelagic fish and large pelagic fish as well as migratory species as well as information on the value and status of coral reefs, seagrass beds and estuary (estuary) ecosystems in Maluku Province is another challenge in fisheries management efforts in Maluku Province. Management of marine conservation areas that are not yet optimal adds to the long list of threats to Maluku's fishery sector. The development of coastal areas that are not environmentally friendly as well as the pollution resulting from the development of public waters needs to be managed through good water zoning planning. Law enforcement efforts are needed to tackle the rampant illegal, unregulated and unreported fishing practices (Illegal, Unregulated, and Unreported / IUU Fishing), shark fishing, destructive fishing practices, wildlife crime, and the lack of capacity of relevant stakeholders.
Conclusion
From the simulation results of the calculation of the Trimaran ship, several results can be concluded as follows.
1. Hull interference occurs as a visible change in speed between the flow velocity between the trimaran hull and those outside the hull.
2. The Trimaran ship has the highest vertical acceleration response when the ship is moving against the direction of the waves (heading seas), where at a ship speed of 15 knots, a wave height of 2.5 meters and an average wave period of 7.2 seconds causing vertical acceleration of 0.806 m/s2 respectively and 0.503 m/s2 on deck.
3. Shaking period of a trimaran is an average of 10.5 seconds, but on a trimaran that meets the IMO standard and is declared not good.