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Penerapan Desain Lambung Berbasis Variasi Sudut Deadrise untuk Meningkatkan Efisiensi Perahu Wisata Skala Kecil di Waduk Lecari Syahputri, Viony Fako; Nugroho, Hendy Pambudi; Sihombing, Herawaty Magdalena; Fadhilah, Mahesa Arma; Anam, Khoirul; Abadi, Galang Wahyu; Raharja, Achmad Mukti
JAST : Jurnal Aplikasi Sains dan Teknologi Vol 9, No 1 (2025): EDISI JUNI 2025
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/jast.v9i1.7148

Abstract

Lecari Reservoir in Wringinagung Village, Gambiran, Banyuwangi, is a new natural tourism destination resulting from a community initiative that has successfully transformed a slum area into a clean and comfortable tourist area. Although the number of visitors is relatively high, especially on weekends, tourism development still faces obstacles such as the lack of variety of water rides, so visitors easily get bored. The solution offered is the design of a two-person tourist boat, with attention to good maneuverability so that it can operate optimally in the relatively narrow reservoir (area 1,829 m², depth 7 meters, width ± 25 meters). Maneuverability analysis is the primary focus because it affects the safety and comfort of boat operations. As part of the community service activities, research was also conducted to evaluate the effect of variations in the deadrise angle of the boat's hull on the Curve of Sectional Area (CSA) and boat resistance performance through numerical simulations. Five deadrise angle configurations (13°, 15°, 17°, 19°, and 21°) were tested at a speed of 15 knots. The results show that a 21° deadrise angle produces the lowest total resistance of 0.66 kN, thus recommending its application in the design of tourist boats in Lecari Reservoir. The results of this community service contribute to the design of a more efficient and environmentally friendly small-scale tourist boat hull to support the development of local tourism based on natural potential.ABSTRAKWaduk Lecari di Desa Wringinagung, Gambiran, Banyuwangi, merupakan destinasi wisata alam baru hasil inisiatif warga yang berhasil mengubah kawasan kumuh menjadi area wisata yang bersih dan nyaman. Meski jumlah pengunjung cukup tinggi, khususnya pada akhir pekan, pengembangan wisata masih menghadapi kendala pada kurangnya variasi wahana air, sehingga pengunjung mudah merasa bosan. Solusi yang ditawarkan adalah perancangan perahu wisata berkapasitas dua orang, dengan memperhatikan kemampuan manuver yang baik agar dapat beroperasi optimal di waduk yang relatif sempit (luas 1.829 m², kedalaman 7 meter, lebar ±25 meter). Analisis manuver menjadi fokus utama karena mempengaruhi keselamatan dan kenyamanan operasional perahu. Sebagai bagian dari kegiatan pengabdian, dilakukan juga penelitian untuk mengevaluasi pengaruh variasi sudut deadrise lambung perahu terhadap Curve of Sectional Area (CSA) dan kinerja tahanan perahu melalui simulasi numerik. Lima konfigurasi sudut deadrise (13°, 15°, 17°, 19°, dan 21°) diuji pada kecepatan 15 knot. Hasil menunjukkan bahwa sudut deadrise 21° menghasilkan tahanan total terendah sebesar 0,66 kN, sehingga direkomendasikan untuk diterapkan pada desain perahu wisata di Waduk Lecari. Hasil dari pengabdian masyarakat ini yaitu memberikan kontribusi dalam perancangan lambung perahu wisata skala kecil yang lebih efisien dan ramah lingkungan untuk mendukung pengembangan wisata lokal berbasis potensi alam
The Effect of Hard Chine Planing Variations on Resistance and Stability of a Patrol Boat Hull Dani, Fildan Lujainid; Raharja, Achmad Mukti; Sihombing, Herawaty Magdalena; Abadi, Galang Wahyu
Indonesian Journal of Maritime Technology Vol. 3 No. 2 (2025): Volume 3 Issue 2, December 2025
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v3i2.8481802

Abstract

Patrol boat play a crucial role in maritime security and law enforcement, where optimizing hull performance is essential to achieve both efficiency and stability in various sea states. This study analyzes the influence of hard chine variations on the resistance and stability of a patrol boat hull. Four hull models single and double chine with angles of 0° and 10° were evaluated using Maxsurf Resistance and Stability. Total resistance was calculated at service speeds of 10 and 15 knots, while stability was assessed based on IMO Resolution A.749(18), Chapter 3. Results show that at 10 knots, the single chine 10° model produced the lowest resistance, whereas at 15 knots, the double chine 10° gave the best performance. Stability analysis indicated that all models met IMO criteria, with the double chine 10° achieving the highest GMt, maximum GZ, and angle of maximum GZ. The findings suggest that the single chine 10° is more efficient for calm-water operations, while the double chine 10° provides superior stability for rough-sea conditions