Jumlah sampah yang dibawa ke Tempat Pembungan Akhir (TPA) Manggar Balikpapan saat ini mencapai 305 m3 perharinya. Lebih dari itu, sering pula dijumpai sampah-sampah yang masih tersebar di muara-muara sungai,pelabuhan dan kawasan perairan lain yang tidak diketahui jumlahnya salah satunya di Sungai Klandasan Hilir. Maka masalah yang muncul adalah bagaimana mendesain suatu kapal yang dapat mengatasi penumpukan sampah di perairan sungai dan berapa ukuran utama yang sesuai untuk perairan sungai diKalimantan. solusi yang dapat digunakan untuk mengatasi penumpukan sampah yang ada disungai yaitu dengan menggunakan bantuan Trash Skimmer Boat. Work Boat ini adalah salah satu jenis dari kapal khusus yang difungsikan untuk melakukan pengambilan sampah perairan baik sungai, danau, laut maupun kanal. Menggunakan metode Parent Design Approach dan dengan bantuan Software Maxsurf maka diperoleh ukuran utama sebesar LOA = 3 m, B =  2 m, T = 0,37 m, H = 0,7 m, B1 = 0,962 m, dan v = 6 knots. Bentuk dasar dari Trash Skimmer Boat ini berlambung pontoon catamaran yang dilengkapi dengan bak sampah dengan kapasitas 1 m3 dan  Setelah dilakukan survey data sampah, disarankan kapal ini dioperasikan sekali dalam seminggu selama 1 jam dengan fasilitas tambahan yaitu 1 bak penampungan sampah dan 1 unit  mini portable crane dengan kapasitas angkut sebesar 300 kg yang diletakkan pada dermaga titik akhir penampungan sampah dari sungai. Kata kunci: Sampah,Sungai Klandasan Hilir, Trash Skimmer Boat

The Landing Craft Tank ship is the usual vessels used to transport massive vehicles like excavator, bulldozer, heavy cargo and other heavy equipment indispensable for construction work. There are heavy equipment decks on the LCT vessels that are use to hold or support the cargo above it. The purpose of this study was to determine the stress value in the deck construction that has been modeled before with a plate thickness variation of 80%, 90% and 100% which is then followed by finding the value of fatigue life in the deck construction. The method used in the analysis this time is the finite element method which models the construction deck of LCT vessels assisted by finite element based applications. From the results of the study it was found that the stress on the deck construction of LCT vessels with plate thickness 100% was 99. 513 MPa, plate thickness 90% was 104.72 MPa and at plate thickness 80% was 105.19 MPa. While the value of fatigue life with a deck plate thickness of 100% is 26.84 years with a number of cycles of 1006700 times, deck plate thickness of 90% is 16.22 years with a number of cycles 129000 times and deck plate thickness of 80% is 15.91 years with a number of cycles 125000.

Ro-Ro Passenger Ship type crossing ship is a ship that is operated to connect 2 (two) ports. On the Ro-Ro ship there is a car deck as one of the vital construction structures, because it is used to support the vehicle load on it. This study aims to determine the value of fatigue life in car deck construction by reviewing hot spot stress areas that are prone to cracking. The value of the fatigue analysis is taken from the greatest stress value and the shortest cycle is taken at each plate thickness variation. The method used is the finite element method (FEM) by varying the thickness of the car deck plate assisted by using finite element based software. The results showed the highest maximum stress was found on car deck 1 with a thickness of 80% (9.6 mm) which was 241.16 Mpa, while the lowest minimum stress was found on car deck 2 with a thickness of 110% (13 mm) which was 103.07 Mpa. The highest value of fatigue life is found in car deck 2 with a plate thickness of 110% (13 mm) of 74.23 years with a stress cycle of 1350000 times, while the lowest fatigue life value is found in car deck 1 with a plate thickness of 80% (9.6 mm) of 7.63 years with a voltage cycle of 220000 times

Fishing vessel craftsmen in the East Kalimantan area have made several changes to the design of fishing vessels to get more catch. Changes were made to the main dimension which resulted in changes in ship characteristics such as speed and stability of the ship. This purpose of research to determine the main dimensions and stability analysis of catamaran hull fishing vessels. The method used is the parent ship method and optimization using maxsurf software. The results obtained were as follows: LOA = 16.2 [m], B = 6 [m], B1 = 1 [m], T = 1 [m], H = 2 [m], Cb = 0.192, Vs = 6.5 [knots], and number of crew = 5 person. The required of Catamaran is a power of 134,498 [HP] consist of two engine 70 [HP]. Based on the results of critical analysis stability on catamarans, the maximum GZ value occurs at a heeling of 20ᴼ. The maximum GZ value in loadcase 1 is 2.326 [m], loadcase 2 is 2.15 [m], and loadcase 3 is 2.18 [m]. The GM values for all loadcase scenarios are not less than 0.15 [meters]. All of them accepted the IMO and HSC 2000 Annex 7 Multihull criteria.

Ship vibration is part of the problem with ship dynamics. In addition to producing noise that disturbs the comfort of crew and passengers, engine structures and components can be damaged due to vibrations that are too high, resulting in material fatigue and material deformation. In order to avoid the damage that occurs and in order to improve the comfort of passengers and crew, shipbuilding must comply with vibration and noise standards. This study aims to analyze the value of vibration and the value of noise that arises on the aluminum fast boat as a result of excitation in terms of the main engine. Calculation of natural frequency and mode shapes is done using ship modeling with Finite Element Analysis Software. The excitation frequency of the main engine is 35.014 Hz. Based on the system's amplitude calculation, the values range from 3.273 x 10-7 to 2.703 x 10-6. Then the vibration standard values obtained are in the range of values from 0.253 to 2.093. Then, the noise radiation value obtained is in the range of 134,582 dB to 130,449 dB. All research results regarding vibration and noise standards in the engine room and passenger deck of aluminum ships obtained results that meet the standards, so it can be concluded that the ship's construction is safe from excessive vibration and noise.