著者
木脇 充明 山崎 泰雄 金子 延男
出版者
公益社団法人 日本船舶海洋工学会
雑誌
関西造船協会誌 95 (ISSN:03899101)
巻号頁・発行日
pp.16-20, 1959-10-20 (Released:2018-02-24)

Recently Volatile corrosion inhibitor (V.C.I.) is applied in all circles to the prevention of corrosion of the iron and steel materials on vapour and liquid phases. Experiments have been made on the anticorrosive effect of the V.C.I. for boilers which are at rest or cleaned with acid. The results of the experiments come to the next conclusions. (1) The suitable concentration of V.C.I. in the liquid phase is 100 mg/l and V.C.I. of more than 100 mg/l is not more efficacious. (2) V,C.I. of 100 mg/l concentration have nearly the same effect as NaOH of 300 mg/l. (3) After the acid cleaning, the boilers must be washed well with NaOH solution and water, and V.C.I. should be used in vapour or liquid phase.
著者
杉山 董 小川 久 吉田 隆一
出版者
公益社団法人 日本船舶海洋工学会
雑誌
関西造船協会誌 (ISSN:03899101)
巻号頁・発行日
vol.103, pp.1-10, 1961

This heavy derrick gear was installed in sister ships SHUNKOKU-MARU and SHUN-EI-MARU, completed in Kawasaki Dockyard Company in July and August, 1960, respectively. Both ships which are owned by Nihon Kisen K.K. and operated by Hinode Kisen K.K., having identical overall length of 132.480m and deadweight of 9,009t, were designed to load and carry extra-super-heavy cargoes, such as rolling stocks, barges, heavy machineries and etc. The most unique feature of the heavy derrick, which has the capacity of 180 tons, is the adoption of the so-called "2 hatch-1 derrick system", enabling one unit of heavy derrick to serve two cargo hatches. Adoption of this system realized decrease in weight of about 20% from the ordinary "1 hatch-1 derrick system". The gear consists of a tower mast installed on the ship center line of maximum diameter 3.600m, with a goose neck ring provided at its foot and with a 180 ton heavy derrick boom connected with the ring. Fall wire and topping lift wire, which are led inside of the tower mast, are wound by 35 ton steam driven heavy duty winches installed on both sides of the upper deck. A heavy derrick boom is capable of rotating about 320° from 70° swing out position at the forward starboard side to 70° swing out position at aft starboard side. In order to minimize the friction by rotation Of the goose neck ring, the ring is supported by 692 roller bearings. The results of 200 ton overload test carried out for the gear illustrated favorable agreement with the respective design values. Details, design and the test results of the gear are described below.
著者
井上 邦之助 近藤 秀一 今井 由次 仲田 武彦
出版者
公益社団法人 日本船舶海洋工学会
雑誌
関西造船協会誌 (ISSN:03899101)
巻号頁・発行日
vol.96, pp.19-23, 1959

In the annexing table the relation is shown between P.S. and machinery weight investigated on 39 diesel driven vessels classified into three types, i.e., cargo vessels with electric deck auxiliaries, cargo vessels with steam deck auxiliaries and tankers. In each type of vessel, machinery weight is itemized into eight main sections: main engine, shaft & propeller, auxiliary machinery, boiler, funnel & uptake, piping, sundries and dynamo. Relation between weight percentage of each section and p.s. is indicated on graph. It is hoped that this investigation will be useful for basic design and cost estimation of vessel.
著者
松本 亙平 齋藤 年正 田野 博
出版者
公益社団法人 日本船舶海洋工学会
雑誌
関西造船協会誌 (ISSN:03899101)
巻号頁・発行日
vol.233, pp.129-134, 2000
参考文献数
4
被引用文献数
1

In vibration design of resonant avoidance to fore and aft vibration of superstructure, it is an important technology to estimate accurate natural frequency and to avoid it from resonant zone of blade or cylinder frequency in case of resonance. In this second report, authors investigated coupled vibration effect of local vibrating body such as funnel or dodger upon natural frequency of superstructure. By connecting funnel casing and deck of superstructure, natural frequency of superstructure becomes extremely high when its fundamental frequency exists higher than that of funnel. It is shown that this phenomenon can be applicable to avoid resonance in actual ship design of superstructure vibration. Long wings(dodgers)which exist at navigation bridge deck also affect the natural frequency of superstructure. Coupled vibration effect of dodger is found to lower natural frequency of superstructure.
著者
田村 功
出版者
公益社団法人 日本船舶海洋工学会
雑誌
関西造船協会誌 116 (ISSN:03899101)
巻号頁・発行日
pp.30-41, 1965-03-30 (Released:2018-02-25)

The Method of Project & Man-hours Control for ship-building is quite different from that of the mass-production control, due to each different tendency of individuality, stability etc. Now, all makers have been forced to cost down their products for price-race, today, ship-builders are also the same, so that the above mentioned control has come up one of the most important problems with those related to large-sized ship structures and automation in operation of ships. The author presents a view on the method of the control by scientific programming to save cost, here.