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All Journal Amanisal: Jurnal Teknologi dan Manajemen Perikanan Tangkap
Leisubun, Machmud A. I.
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Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Environmental Science Physics

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MEKANISME NAVIGASI LAUT DENGAN PEMAKAIAN PETA DAN KOMPAS KR. BAWAL PUTIH III Leisubun, Machmud A. I.; Tuapetel, Friesland; Behuku, Gerson
Amanisal: Jurnal Teknologi dan Manajemen Perikanan Tangkap Vol 14 No 1 (2025): Amanisal: Jurnal Teknologi dan Manajemen Perikanan Tangkap
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/amanisal.v14i1.18550

Abstract

Despite the rapid advancement of digital technology and the widespread adoption of modern electronic navigation systems, conventional navigation method, such as the use of maps and compasses, continue to play a significant role, especially in emergency situations or when electronic systems become unreliable due to signal disruptions. This study aims to evaluate the effectiveness of maps and compasses as navigation method during emergency or shortage condition in the research vessel KR. Bawal Putih III, including accurate determination of the ship’s position and route. Also, this study investigates various factors influencing the effectiveness of this conventional method. The study was conducted from April 17 to June 1, 2024, at the Fisheries Training and Extension Center (BPPP) in Ambon, Maluku. A descriptive approach was employed, with primary data collected through direct observation, interviews, and field measurements, complemented by secondary data from literature and technical documents. The findings revealed that the use of maps and compasses remains effective, particularly for archipelagic regions navigation with complex currents and challenging terrain. KR. Bawal Putih III, equipped with a magnetic compass, nautical charts scaled 1:50,000, and other navigational aids, has proven its capability to effeiciently accomplish training and research vessel function. Possitioning accuracy using maps and compasses highly depends on the crew's interpretation and accurate calculation skills. The novelty of this research lies in its practical evaluation of conventional navigation systems on a modern training vessel, offering a reliable alternative when electronic systems are limited. Thus, the study reinforces the importance of preserving and strengthening conventional navigation skills as a fundamental competency for seafarers, which remains highly relevant in the digital age.
Komposisi Hasil Tangkapan Bubu Berlampu Dan Bubu Berumpan Di Sekitar Keramba Jaring Apung Leisubun, Machmud A. I.; Mosse, Jacobus W.
Amanisal: Jurnal Teknologi dan Manajemen Perikanan Tangkap Vol 14 No 2 (2025): Amanisal: Jurnal Teknologi dan Manajemen Perikanan Tangkap
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/amanisal.v14i2.23921

Abstract

Fish traps (bubu) are passive fishing gears that can be operated across a variety of habitats. However, the deployment of bubu around floating net cages (FNCs) has received limited scientific attention. This study aimed to examine the species composition and productivity of bubu traps using different bait characteristics. Two types of traps—those baited with Decapterus sp. (momar) and those equipped with lights—were operated around FNCs during morning and afternoon periods. Four light colors—red, yellow, blue, and white—were tested, each yielding distinct results. A total of 150 individuals were captured, comprising 26 fish species and several benthic organisms such as crabs, sea cucumbers, and sea urchins. The highest productivity was recorded in baited traps, averaging 5.8 catches per trip, predominantly composed of crabs. Traps with blue light produced an average of 5.0 fish per trip, exclusively capturing fish species. White, yellow and red light traps, in contrast, were dominated by sea urchins alongside fish catches. Based on economic value, the catches from baited traps consisted of commercially important carnivorous species such as groupers (5.2%), scads (5.2%), and emperors (10.3%). In comparison, light-baited traps tended to attract planktivorous fish. The use of bubu with various bait characteristics may serve not only for fishing purposes but also as a tool for ecological observation as anthropogenic impact, such as areas surrounding FNCs.
Co-Authors Behuku, Gerson Jacobus W. Mosse, Jacobus W. Tuapetel, Friesland