DETERMINING GROSS TONNAGE OF PURSE SEINERS USING A PHYSICAL MODELING APPROACH IN TEGAL, CENTRAL JAVA:

Suharyanto Suharyanto; Ratih Purnama Sari; R. Mohamad Adha Akbar; Yaser Krisnafi; Tonny  Kusumo

doi:10.24319/jtpk.16.12-21

Suharyanto Suharyanto Fishing Technique Department, Politeknik Kelautan dan Perikanan Karawang, Tanjung Pura-Klari Street, Karangpawitan, West Karawang 41315, Indonesia
Ratih Purnama Sari Fishing Technique Department, Politeknik Kelautan dan Perikanan Karawang, Tanjung Pura-Klari Street, Karangpawitan, West Karawang 41315, Indonesia
R. Mohamad Adha Akbar Fishing Technique Department, Politeknik Kelautan dan Perikanan Karawang, Tanjung Pura-Klari Street, Karangpawitan, West Karawang 41315, Indonesia
Yaser Krisnafi Politeknik Kelautan dan Perikanan Sidoarjo, Buncitan Street, 161253, Sidoarjo 46396, Indonesia
Tonny Kusumo Fishing Technology Department, Politeknik Ahli Usaha Perikanan Jakarta, Pasar Minggu Street, Pasar Minggu District, South Jakarta, Jakarta 12520, Indonesia

DOI: https://doi.org/10.24319/jtpk.16.12-21

Keywords: gross tonnage, purse seiner, ship’s hull, Tegal

Abstract

The research was carried out at the dock and shipping companies, PT. Indonesian Fisheries, PT. Tiara, and village cooperative unit (KUD) Karya Mina, at Tegal, Central Java, in October 2023. The research aims to determine the percentage change in shape of the ship’s hull below deck, Cb (coefficient block) and GT (gross tonnage) values of purse seiners in the Tegal using a physical model that is dipped in water. The Cb and GT values research was focused on KM. Himalaya SB with 84.44% accuracy. The results at the three dock and shipping companies showed that the change in the shape of the ship’s hull below deck, on average, in part I, II, III, IV, and V were 14%, 20%, 30%, 11%, and 25%, respectively, and in the case of KM. Himalaya SB part I, II, III, IV, and V were 15%, 18%, 29%, 9%, and 29%, respectively. The shape was dominated by shapes III and V. The ones that increase Cb and GT values were shape III with a U shape. The results of the average percentage change in shape for 6 ships, including the case example purse seiner, have a pattern that tends to be the same. The Cb value obtained from the experimental results was 0.82 > 0.70 from the "f" factor coefficient according to Minister of Transportation Regulation Number 8 of 2013. Based on the GT calculation, it was obtained that the value increased by 17% when compared to the regulation.

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DETERMINING GROSS TONNAGE OF PURSE SEINERS USING A PHYSICAL MODELING APPROACH IN TEGAL, CENTRAL JAVA

PENENTUAN GROSS TONAGE KAPAL PURSE SEINE DENGAN PENDEKATAN PEMODELAN FISIK DI TEGAL, JAWA TENGAH

Abstract

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