A survey and experiment have conducted on fishing boat materials of justconstructed, 10 years and 15 years old. Materials were sampled and its strength wastested in order to understand the fatigue and its cause. The fatigue of materials is inregression linear but depending on the kind of wood, its processing, and the placeused in the boat construction. Those of materials use to be submerged in the waterwill be fatigue faster compare to those used in the dry place. The fatigue caused bymarine organism such sea worm holed into or some mollusks and microbe mashesattach to the surface of wood. Proper processing and well maintenance duringoperation of the boat will makes it be last longer.
This research was aimed to study about the potential of fiber structure teki grass (Fimbristylis sp), linggi grass (Penicum sp) and sianik grass(Carex sp) as natural fibre for fishing gear materials. The parameter of this research are; water content, elongation, breaking strength andhistology of the fiber. This research used the observation and experimental method. The observation method is used to know the fiberstructure and water content of teki grass, linggi grass and sianik grass. The experimental method was used to test the breaking strength andelongation of the objects in wet and dry condition. Based on the histology observation, teki grass has an epidermis layers as fiber structure.It consists of parenchyma tissue and collenchymas tissue.Fiber structure of linggi grass and sianik grass are similar with teki grass. Sianikgrass has the most excessive epidermis layer than others i.e. 5.57 gram. The average water content of teki grass is 1.03 gram, and linggi grassis 0.17 gram. Based on the breaking strength test, sianik grass is stronger than others with average strength 9.05 kgf in wet condition and9.75 kgf in dry condition. Meanwhile, breaking strength of the teki grass and linggi grass is 3.20 kgf and 4.16 kgf in wet condition and 4.30kgf and 5.25 kgf in dry condition. The average of the elongation of sianik grass is longer than others i.e. 24.50 mm in wet condition and18.75 mm in dry condition. The elongation of teki grass is 9.05 mm in wet condition and 11.10 in dry condition. The average of linggi grasselongation is 12.20 mm in wet condition and 12.90 mm in dry condition. Based on the breaking strength and the elongation test, the resultshowed that sianik grass is the most potential natural fiber as fishing gear material.
Effort for obtaining effective engine power of fishing vessel and improve thework condition comfortableness on the vessel believed to increase productivity andefficiency of fishing vessel. Assembling of engine accessories effected output ofengine power optimally. Therefore, based on mechanism system analysis of fishingvessel was conducted a study on assembling of engine accessories, such as exhaustpipe, electricity system, rudder and its size calculation method.
An image of no strategy of industrialization in Indonesia has stimulated this article, to discuss the contemporary industrial policy of Indonesia, especially post monetary and economy crises of 1998, which has been distort economic stability. The development of industrial policy and problems are analyzed, especially related to basic ideology, the goals and its achievement, in structural change and economic integration. With this basic step, an industrialization policy system propose, which is planning as the institutional coordination of policies because industrialization should be based on agriculture toward agroindustry progress as the foundation of industrialization toward manufacturing, by mean of productivity increasing, purchasing power strengthen and improvement agriculture technology. In turn a policy of industrialization will be the development of import substitution industry and by proper selection the export –drive industry will be developed base on the criteria of jobs creation and economic structure change
The integration of engine into the wooden boat needs good knowledge ofeffective engine installation technique. Otherwise, the function of engine will notharmonic with the aims to move the boat properly to be optimum. The effectivenessof engine installation has link to engine foundation, the position of propeller axispoint at the height of keel and the stern. Two systems of engine installation, whichhave experimented and observed its effectiveness; first the lobe point of propelleraxis at the horizontal position just on the middle of the height of the “L” pillarbetween the keel and bosom of stern ceiling. Secondly, the propeller horizontal axishole in the point at the mid-height of keel-end and the ceiling of stern as the propellerposition. The result found that the first technique causes the power of engine weakeras compare to the second one; whilst the keel and engine fundation have to bemodified so that the position of engine foundation can be well on horizontal line,which caused change of the keel strength or the boat strength will be lesser. Hence,by mean the propeller axis lobe point at the mid-height between keel-end and thestern bosom found to be effective as the function of engine as power to move the boatworks better with less engine noise and vibration than the other technique.
Studies on Rasbora sp. have been developed in the last two decades, but nostudy have been conducted on the fish spawning related to requirement of adomesticated fish (normal movement, feed on artificial food, growth, and spawn).An experiment on the ethology of R. latestriata executed in the concrete tank of3mx2mx15m watered continuously up to 50 cm in depth and by inlet pipe positionthe water move at the flow speed less than 10 cm/sec. More than 60 randomly maleand female fishes feed ‘ad libitum’ with catfish pellet artificial food and cultured forthree months in the rainy season. At the third month approximately hundred fishlarvae of 1 to 1.5 cm were found. This study concluded that Rasbora can be culturedcommercially, as the fish domesticated as ob-served moving normally, feedingartificial food, growth and spawn in the human control environment. However,further study on breeding and commercial aquaculture of the fish is necessary.
Experiment on designing of smoking cabinet technology to producedsmoked-fish for cottage scale aquaindustry and to evaluate produced smoked fishorganoleptic and coast have been done. The result shows that small and middlescales smoking fish designed well accountable functionally to produced smokedfish, that caught from marine and fresh waters and cultured fish. Organolepticallythe smoked fish well consumed by the panelists, with value in between 60%-70%depend on the species of smoked fish. The cost of smoked fish produced similarto the market price of smoked fish produced traditionally, the production cost offish materials used alone approximately 73% of market price. This situation opensthe opportunity to improve efficiency of design, engineering and technique ofsmoking.
Understanding of industrial situation in an area, is essential to develop theindustry further, and production factors situation can be represent it. Usingendogenous perceptional method, the production factors of wooden made boat ofshipyard surveyed. The location, worker, capital, and entrepreneurship situation andcondition observed, were tend to be bad, due to the technical and managerialproblems. Especially concerning with entrepreneurship, high price and difficult to getproper wood materials, no well trained technician in ship design, in machineryrecruitment, and lack of training program to improve the situation or to solve theproblems. As consequence some of the shipyard enterprise either close, stop toproduce ship, or moving to other location. A deindustria-lization trend emerged asmany workers unemployed and the area become depressed.
In order to fulfill a prerequisite domesticated and culture of climbing perch, anexperiment have been executed to spawn the fish in the circular concrete tank ofdiameter 1,2 m x 0,5 m in depth with 6 – 8 cm water depth and in the wooden tankcovered with blue color plastic of 1 m x 2.5 m x 0.5 m with water depth of 23 – 25cm. Into the respective tanks spawned mature climbing perch of 7 – 18 cm in lengthwith sex ratio of one female and two male broodstocks and two pairs of male andfemale broodstock with several water hyacinth. The broodstocks were feed on ricebrean and old water hyacinth as detritus. Water temperature was around 22 – 32 oC.Within three weeks the fish spawned and hundred of fish larvae of 1 – 1,5 cm inlength of two weeks old were found with survival rate less than one percent.Meanwhile within the next two weeks the fish grow to 2 – 2,5 cm with body colordarkened. Hence, the successful of climbing perch spawn in the control environmentwithout any modification of its condition support that the fish is well domesticatedand further hatchery development for the fish as well as its culture in the pond andfloating cage are feasible. However further study on proper sex-ratio, hatchery designand engineering, as well nurturing of larvae are a new interesting challenge.
Financial analysis of the artisanal fishery by fish catch marketingdifferences done in Bagan Serdang village, North Sumatra, using survey methodsin data collecting. Fishermen, whose fish-catch market in the government managefish landing place and in the private fish landing place were interviewed. Financialanalysis result shows that yearly income of fishing that market their catch at thegovernment fish landing place earn Rp6,045,000 in average, while at the privateone earn only Rp2,600,000 (t-observe = 3.10 > t-tabel 0,01 = 2.42), thus verysignificance in income difference due to its distinction market pattern. All fishingshow efficient, as BCR > 1 and PPC less than 1.5 years. Eventhough, most of thefishers prefer to market their fish-catch at private landing place, mainly because ofreciprocity, better service and governance in the private landing place, beside‘patron-client’ relationship, in spite of its exploitative in their traditionalrelationship but tight attachment and dependency of fishermen to the individualowner of private landing place.