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Journal : Jurnal Teknologi Perikanan dan Kelautan

EFEKTIVITAS SIRIP PEREDAM DALAM MEREDAM EFEK FREE SURFACE YANG MEMPENGARUHI GERAKAN ROLLING KAPAL MODEL Dwi Putra Yuwandana; Yopi Novita; Budhi Hascaryo Iskandar
Jurnal Teknologi Perikanan dan Kelautan Vol 6 No 2 (2015): NOVEMBER 2015
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3558.211 KB) | DOI: 10.24319/jtpk.6.187-197

Abstract

Ships carrying liquid cargo will experience free surface effects. It is a free movement of liquid cargo in the hold, especially during rolling motions. The use of absorber fins in hold is an alternative to reduce the free surface effect. This study aimed to determine the minimum size of absorber fins that were still effective to reduce the effect of free surface affecting the rolling motion of ship. The experimental method was applied by using a model ship with hold. Four size of absorber fins were used as treatments in this experiment. Data were analyzed by comparative numerical and statistical tests using a completely randomized design. During the experimental, four variable that were observed such as angle of rolling ship model, rolling duration, rolling frequency and rolling period. The result showed that the use of absorber fins with the size of (10%) of the free surface area was effective to reduce the free surface effect toward the rolling motion of ship models.
EFEKTIVITAS ATRAKTOR CUMI-CUMI DI LOMBOK TIMUR, NUSA TENGGARA BARAT Mulyono, Mulyono; Imron, Mohammad; Hestirianoto, Totok; Kholilullah, Ibrahim; Prasetiyo, Shidiq Lanang; Komarudin, Didin; Yuwandana, Dwi Putra
Jurnal Teknologi Perikanan dan Kelautan Vol 14 No 1 (2023): MEI 2023
Publisher : Fakultas Perikanan dan Ilmu Kelautan, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3240.318 KB) | DOI: 10.24319/jtpk.14.55-64

Abstract

Salah satu teknologi yang dapat mendukung peningkatan populasi cumi-cumi di alam adalah teknologi atraktor cumi-cumi. Atraktor cumi-cumi dapat berfungsi sebagai suatu ekosistem baru dan dapat mengumpulkan cumi-cumi. Tujuan penelitian ini adalah menentukan karakteristik perairan tempat pemasangan atraktor cumi-cumi, menentukan desain kontruksi atraktor cumi-cumi, dan menentukan efektivitas pemasangan atraktor terhadap hasil tangkapan cumi-cumi. Metode penelitian berupa eksperimental fishing dan studi literatur digunakan dalam penelitian ini. Hasil penelitian menunjukkan suhu permukaan laut di periaran Labuhan Haji dan Tajung Luar secara berurutan berkisar 27,10-28,29°C dan 28,15-28,79°C, kondisi dasar perairan Labuhan Haji pasir berlumpur dan Tanjung Luar pasir berbatu. Desain atraktor berbentuk tabung dengan diameter 60 cm, panjang 120 cm, dan berwarna hitam. Pemasangan atraktor efektif mengumpulkan cumi-cumi.