Fishing boats are used in capturing or collecting aquatic resources. As a means of production, the boat should meet various conditions of seaworthiness i.e. good stability, good seakeeping ability and minimum resistance. Those criteria can be identified when the boat size and the hull form are designed. This study investigates the effect of the boat dimension and the hull form on the stability, resistance and seekeeping ability. Various sizes and hull shapes of a 20 GT fishing boat were simulated, and their performances were compared to the IMO standard. The results suggest that the minimum breadth (B) - draft (d) ratio which meets the stability criterion is 2.50, while the ratio of the center of gravity distance from the keel (KG) and the depth (D) of the boat is 0.65. Furthermore, for the boat with a higher B and D ratio, its resistance is relatively smaller. In terms of seakeeping ability, particularly roll and pitch motions, U type bottom performed better than the Akatsuki bottom. Keywords: fishing vessel, sea keeping, ship hull, stability, resistance

Fishing vessels used to catch resources from the sea has to pass some of the regulations from International Maritime Organization for sea-worthiness of the vessel especially about stability, resistance to acquire the highest velocity, and the vessel’s motion. This research discusses the effect of the vessel’s dimension and the hull shape by using the stability standard from IMO.The result shows that the ratio of the B/T which meets the stability criteria is 2.50 with the ratio of KG/H of the vessel is 0.65, with the assumption that the KG and H of the vessel are more than 0.70. Whereas if the resistance ratio B/T is big, the resistance for the vessel will be relatively smaller. In terms of the vessel motion, a vessel with a V-type hull will better than a U-type hull in seakeeping.

Abstract— Based on the geographical conditions of Indonesia, especially the eastern region of Indonesia, a national sea transportation system is needed that can be a bridge for remote, isolated and undeveloped islands using pioneering sea transportation. The problem is when the pioneer ships carry out maintenance and repairs, where the pioneer ship population of 82% operates in the eastern part of Indonesia and 18% operates in the western region of Indonesia, while 70% of shipyards are located in Western Indonesia and the remaining 30% are located in Eastern Indonesia. The purpose of this study is to determine the appropriate type of shipyard. The methods used in this study were the fishbone and SWOT methods. As many as 11 locations in Indonesia are selected for surveys. Construction of shipyards for pioneer ships takes into account shipyard availability in the area of operation, the number and type of vessels operating. The results show that the best shipyard location to support the operation of pioneer ships is located in the Bitung Region or in the Sorong Region with the type of shipyard in the form of a slip way.

Sektor pariwisata adalah salah satu dari banyak sektor yang mendorong pertumbuhan ekonomi yang penting bagi suatu negara. Indonesia, dengan kekayaan alam dan budaya yang dimilikinya dapat menarik jumlah wisatawan, mancanegara maupun nusantara. Raja Ampat merupakan wilayah yang mempunyai beberapa kekayaan keindahan alam, termasuk kelautannya. Dengan perkembangan teknologi sarana transportasi, bermula dari kapal tradisional Pinisi hingga kapal Yacht, untuk itu perlu adanya pelabuhan untuk dapat melayani kapal modern. Penelitian ini dilakukan untuk merencanakan pelabuhan wisata dengan dukungan fasilitas dermaga pesawat terbang air didalamnya. Berdasarkan data kunjungan wisatawan dan kapal yang sandar, digunakan metode proyeksi yang menggunakan regresi linier untuk mengetahui berapa jumlah kedatangan wisatawan dan jumlah kedatangan kapal 5 sampai dengan 20 tahun yang akan datang. Dari hasil proyeksi perencanaan pelabuhan didapatkan peningkatan produksi penumpang yang signifikan mencapai 488%, menjadikan perlunya dilakukan pengembangan dermaga dan fasilitas lainnya yang menyesuaikan dengan perkembangan teknologi sarana transportasi.

Emission is one of the few environmental problems, and ships are one of the modes of transportation that produce it. This study aims to define the impact of using optimal trim during the cruising phase, so it can decrease the resistance and the fuel consumption, which will lead to less emission produced by the ship. The type and amount of ships used in this study are three tanker ships, three container ships, and two bulk carrier ships. The methodology used in this study is by using Holtrop’s resistance calculation method with the help of Maxsurf software. The resistance, the power needed, and the fuel consumption is calculated on 22 trim variations and seven speed variations. This study determined that the average decrease in fuel consumption caused by trim optimization for tanker, container, and bulk carrier ships is 5.641%, 8.269%, and 15.704%. Furthermore, the average decrease of emissions produced by tanker, container, and bulk carrier is 6.494%, 11.317%, and 13.775%, respectively. These results are narrowed down to conclude that trim optimization can reduce fuel consumption by up to 9.871% and decrease the emission produced by up to 10.529% for the three types of ships used in this study.

Pariwisata memberi dampak besar pada kegiatan ekonomi sebuah negara. Wilayah dengan begitu banyak situs wisata menjadi magnet yang menjadi faktor penarik wisatawan internasional maupun lokal. Sebagai negara kepulauan, pelabuhan menjadi halaman depan dan memainkan peran penting untuk menerima wisatawan maupun penumpang lokal. Oleh karena itu, meningkatkan kinerja layanan pelabuhan menjadi kebijakan yang lebih penting bagi otoritas lokal pelabuhan. Penelitian ini menggunakan metode kualitatif untuk memperoleh data. Indeks Kepuasan Pelanggan (CSI) digunakan sebagai alat untuk menganalisis kinerja pelabuhan di pelabuhan yang diamati. Penelitian ini dilakukan dengan mengukur tingkat kepuasan penumpang terhadap fasilitas di Pelabuhan yang mejadi pengamatan, yaitu Pelabuhan Pangkal Balam. Dalam pengukuran tingkat kepuasan ini menggunakan analisis kuantitatif dengan menggunakan metode Customer Satisfaction index (CSI). Hasil penelitian menunjukkan bahwa tingkat kepuasan penumpang masih rendah untuk layanan nilai CSI, yaitu 54%. Dan untuk fasilitas, nilai CSI adalah 57%, peningkatan layanan dan penentuan standar layanan perlu mendesain ulang terminal penumpang dari Pelabuhan yang diamati, dengan menambahkan fasilitas sesuai dengan standar layanan minimum (SPM) berdasarkan peraturan nasional.

Tempat pariwisata di Indonesia telah menjadi destinasi yang banyak dikunjungi bagi wisatawan dalam negeri maupun luar negeri. Danau Toba merupakan destinasi wisata prioritas, sehingga pariwisata ini sangat berpotensi untuk dikembangkan sebagai salah satu aset yang digunakan sebagai sumber yang menghasilkan bagi bangsa dan negara. Penelitian ini dilakukan untuk merencanakan desain pelabuhan wisata dan tata kelola pelabuhan di kawasan Danau Toba dengan tersedianya transportasi kapal ferry, kapal wisata, bus air. Perencanaan pelabuhan yang diteliti menggunakan standar fasilitas yang sangat mendukung mengacu pada Petunjuk Teknis Rencana Induk pelabuhan, dan PERMENPAR nomor 3 Tahun 2018 dengan menambahkan beberapa fasilitas untuk seaplane bases dan WIG (Wing in Ground Effect) seperti landasan pesawat amphibi yang mengacu pada U.S Departement Of Transportation, Federal Aviation Administration dalam dokumen Advisory Circular (AC) No.150/5395-1B. Untuk kelengkapan fasilitas di pelabuhan dan seaplane bases digunakan metode Benchmarking dengan mengacu pada pelabuhan ferry dan seaplane bases yaitu dermaga eksekutif Pelabuhan Merak, Singapore cruise center, Harbour Bay Batam, Jantzen Beach Seaplane Bases, Traves Seaplane Bases, Lake Hood Seaplane Bases. Pelabuhan ini direncanakan melalui beberapa tahap pembangunan menggunakan data pengunjung wisatawan dengan proyeksi kunjungan 20 tahun kedepannya. Berdasarkan hasil proyeksi maka jumlah penumpang terbanyak terjadi pada tahun 2040 dengan jumlah 264.202 orang.

A new multibeam dataset of Nieuwerkerk and Emperor of China (NEC) seamounts was acquired during the Jalacitra 2-2022 ”Banda” Expedition in the Banda Sea region. This study discusses a morphometric analysis of the seamounts based on a high-resolution bathymetry digital elevation model (DEM) and describes the morphometric features, namely: slope, profile curvature, and aspect. Morphological results indicate that the Nieuwerkerk seamount has an area of 2,416 km2 with a maximum peak elevation of approximately 3,460 m above the seabed and 357 m below the water surface. In the southwest of the Nieuwerkerk seamount, two new seamounts were discovered, which are still unnamed and seem morphologically connected to the Nieuwerkerk seamount. Each of the seamounts covers an area of 148 km2 and 220 km2, respectively, with a maximum peak elevation of approximately 2,338 m and 2,053 m above the seabed. Additionally, both seamounts have an elevation of 1,878 m and 2,017 m below the sea surface. Meanwhile, the Emperor of China seamount is located southwest of the three formerly mentioned seamounts, with the maximum peak seats at 2,165 m below the sea surface. Seamount C is located in the west of the surveyed area and it covers an area of 95.6 km2 with an elevation of 1,834 m above the seabed. The results of regression analysis indicate that all of the features could be used for the morphological classification.