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All Journal International Journal of Marine Engineering Innovation and Research
Wiwin Sulistyawati
Department of Naval Engineering, Universitas Pembangunan Nasional Veteran Jakarta, Jakarta 12450, Indonesia
Automotive Engineering Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Effect of Bilge Keel on The Resistance Characteristic of Fishing Vessels in Benoa : A CFD Simulations Study Tiara Asya Da Rosta; Mohammad Ridwan Utina; Nanang Setiyobudi; Dian Purnama Sari; Wiwin Sulistyawati
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 2 (2026)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v11i2

Abstract

Bilge keels are commonly installed on fishing vessels to improve stability and operational safety; however, their influence on calm water resistance remains insufficiently documented for hull forms representative of Indonesian fishing vessels. This study investigates the effect of bilge keel installation on the total resistance of a 33.5 m tuna longline fishing vessel reconstructed from field survey data in Benoa, Bali. The resistance performance of bar  hull and bilge keel equipped configurations was evaluated using steady state CFD based on the RANS equations and validated against towing tank data at 3, 6, and 9 kn. Simulations were conducted over a range of Froude numbers from 0.09 to 0.271. Results indicate that both configurations exhibit the expected non-linear increase in resistance with speed. Under the investigated numerical conditions, the bilge keel equipped hull was predicted to produce lower total resistance than the bare hull across the evaluated speed range, with the largest reduction of approximately 18% at 6 kn. These findings suggest that, for the investigated hull and appendage arrangement, bilge keel installation may induce favorable local hydrodynamic interactions that partially offset appendage related drag.
Impact of Wingsail Integration on Seakeeping Performance and Stability of a Fishing Vessel Hegel Desta Zalayetha; Muhammad Ridwan Utina; Dian Purnamasari; Endah Suwarni; Wiwin Sulistyawati
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 1 (2026)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v11i1

Abstract

Reducing fuel consumption in fishing vessels has become an important issue in improving the efficiency and sustainability of maritime operations, particularly for small and medium-scale fisheries. One potential approach is the integration of wind-assisted propulsion systems such as wingsails. However, the addition of structures above the deck may influence vessel stability and motion responses in waves. This study evaluates the effect of wingsail integration on the seakeeping performance and intact stability of a fishing vessel operating in Benoa, Bali. The reference vessel has principal dimensions of LOA 33.50 m, LPP 29.65 m, breadth 7.95 m, depth 4.06 m, draft 2.90 m, and displacement 415.6 tons. Analysis is conducted using Maxsurf Stability for intact stability assessment and Maxsurf Motion for seakeeping analysis. The seakeeping evaluation considers wave headings of 90°, 135°, and 180° with vessel speeds of 6, 8, and 10 knots, while sea conditions are derived from Beaufort scale conversion. Vessel motions are assessed using RMS, MSI, and MII according to STANAG 4154, while stability is evaluated under departure, fishing ground, and arrival load cases based on IMO Intact Stability Criteria.
Co-Authors Dian Purnama Sari Dian Purnamasari Endah Suwarni Hegel Desta Zalayetha Mohammad Ridwan Utina Muhammad Ridwan Utina Nanang Setiyobudi Tiara Asya Da Rosta