著者
重光 蔟
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.60, pp.19-39, 1937

The author first deals with the vicissitude of the Japanese tonnage in the past and that of the shipbuilding in dustry, the lists of the particulars of the vessels with special features built during such period being also given.Under the heading of "the Measures taken by the Government for the-Japanese Shipbuilding, " the provisions for the exemption of the customs duties regarding to the articles for marine uses, the subsidy system for the encouragement of manufacturing steel for ship construction, the marine loan system and the system of the governmental permission for importing operable ships, are described, and also the contents and results of the provisions for facilitating the improvement of ships are explained. Then the author discusses the development of marine engines in Japan, pointing out the fact that the fuel consunption at the same power has been lowered up to sixty per cent in comparison with that in ten or more years ago. Further, he deals with the model tests of ships and their effects, and explains that the shaft horse power required for the operation of the same ship at the same speed has been reduced to seventy percent of that in old time. Thus, the progress of Japanese shipbuilding technique, by which the fuel consumption of ships has been reduced by at least one-half in total, is clarified.
著者
正木,壽郎
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.67, 1941-02-25

Twin screw motor ship "Silver Cypress" of 6,710 G.T. and 7,000 B.H.P. was built in 1930 by Harland & Wolff at Belfast, Ireland, as an up-to-date cargo boat and was placed in the fleet of the Silver Line Ltd. While lying at anchor outside the harbour of Manila, in January, 1937 a fire broke out in her engine room and spread to the cargo stowed in the hold immediately forward of the engine room. Moreover, the fire swept into the aft holds engine room, and continued for seven days, destroying the entire cargo. After the fire was put out, it was found that all of the decks, deck houses, shell plates and equipments on aft half of the ship were completely burned beyond repair. In the engine room, the main motors were hopelessly damaged from bed to cylinder head ; every part of babbit metal at rubbing surface was found to have melted ; and further more all the auxiliary machineries, the dynamos and armoured cables. Because of the extensiveness and the serious nature of the damage as explained above, the underwriters had no alternative but to condemn the ship and she was sold to a scrap dealer who towed the bulk to Japan Later, it was purchased by the Kawasaki Kisen Kaisba who made a most thorough investigation of the matter and decided to have the hulk repaired. As new steel and iron were not so readily available in Japan then as in ordinary time, every effort possible was made to recover the damaged material for use in the reconstruction work. Also the damaged main motors and auxiliary machineries were repaired without exception. It took 20 months to complete the repairs but now the ship is in excellent condition, both her hull and machinery, and is employed in the service between Japan and America.
著者
古賀,繁一
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.79, 1948-12

本艦は昭和13年3月29日, 三菱長崎造船所第二船臺に起工し昭和15年11月1日午前8時56分の満潮時に無事進水した。本艦と同型である一番艦は造船船渠で建造せられた為, 進水は唯出渠作業に過ぎないけれども, 本艦は船臺建造であるため本式の進水を施行しなければならぬ。前例のない進水重量と, 進水臺の為, 愼重な計畫の基に徹底的な研究と調査の上工事を施行したものであるが, 先日進水諸調査及實験に就ては發表があつたので, 本日は現場工事に就て御報告申上げ以て會員諸氏の御参考に供し度いと思う。
著者
林,毅
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.81, 1949-07-25

This problem has been studied by several authors, but as the formula for the buckling load it is merely derived the determinantal equation of conditicns of buckling, and as the orthogonal anisotropy in it s analysis it is contained only the differences of dimensions of outer skin in two perpendicular directions. It is an urgent need in practice, to derive the explicit expression for the buckling load of orthogonal anisotropic shells, containing the general elastic constants, rigidities and dimensions. From this point of view, the author derived in general form the equation (21) (36) (37), and (57) (58) for compression-, bending- and tcrsion-buckling. Excepting the case of equation (21), these equations give a pretty good agreement with the experiments.
著者
尾崎,辰之助
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.62, 1938-06-30

"Sumiyosi Maru" is the first Diesel-electric tug built in Japan, of which the speed control is of Ward-Leonard system. That was designed and equipped at Kawasaki Dock Yard Co., Ltd. for their own use. That was, also, equipped with as power plant to supply electric power for electric welding and compressed air to ships in harbour. The descriptions of hull, propelling machineries, power plant, trial trips and towing tests are successively set forth.
著者
西村 眞次
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.27, pp.1-9, 1921
著者
西村,眞次
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.27, 1921-12-31
著者
西村 眞次
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.23, pp.64-84, 1918
著者
西村,眞次
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.23, 1918-11-25
著者
斯波,孝四郎
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.58, 1936-08-20
著者
福井,順平
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.39, 1926-10-30

The apparatus is to quickly haul the vessel bodily above water in order to rescue the crew in sunken submarines. Every submarine is attached with a special fitting with a projection which a leading wire and a bouy are joined to. The wire and the bouy have connection to a telephone bouy. If the vessel founders and the telephone bouy lifts, the above mentioned bouy and wire can be picked up. From one side of a salvage vessel another fitting with a tenon is led downward along the wire and clutched to the above mentioned fitting on the submarine. A tackle is joined to this fitting and the fall is led over the salvage vessel to another submarine hunged on the opposite side of the former. A suitable number of such apparatuses are provided on the wrecked submarine, the salvage vessel, and the hunged submarine. On the completion of all apparatuses, the hunged submarine is sunk down by flooding its inside. The weight of the hunged submarine and some pull given by winches are available in hauling the wrecked submarine upon water surface. Afterwards the sunken hunged submarine is again lifted above water by applying pneumatic air.
著者
福井,順平
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.38, 1926-06-10
著者
井口,常雄
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.80, 1949-03
著者
福井,又助
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.48, 1931-10-31

In this paper, the author intends to describe how the "Kotaka" (a little river gun boat) was lifted by a crane and put on board a ship when she was transported from the Tama Dock Yard, Japan, to Shanghai. The hull of the boat is not so strong since she has very light scantlings, but she displaces 60 tons at the normal condition and her weight lifted was such amount as 53.5 tons. Therefore, it is a rare case to do such a work, and there were troubles to be overcome. You will be interested in the author's explanation about the following items : -The outline of the subject. The general feature of the "Kotaka" The calculation for the lifting arrangement. The result of the work. etc.
著者
山本 幹之助
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.60, pp.15-18, 1937
著者
玉井 喬介
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.47, pp.147-183, 1931

It is a well known fact that oil tankers in loaded conditions sustain severe sagging stress on top-side member in rough weather. Time motor tanker "San Diego Maru" encountered extremely rough seas in Pacific Ocean during a winter voyage, resulting severe bucklings and some cracks on the upper deck plating and also upper strakes of longitudinal bulkheads in midship portion. The author analyses the causes of the damage referred to, describing her general longitudinal strength among waves, the effect of impinging water on decks, together with some investigation on the theoretical buckling stress on deck plating stiffened with beams of comparatively light scantling.
著者
尾崎 辰之助 和辻 春樹
出版者
造船協會
雑誌
造船協會會報
巻号頁・発行日
no.62, pp.77-90, 1938

"Sumiyosi Maru" is the first Diesel-electric tug built in Japan, of which the speed control is of Ward-Leonard system. That was designed and equipped at Kawasaki Dock Yard Co., Ltd. for their own use. That was, also, equipped with as power plant to supply electric power for electric welding and compressed air to ships in harbour. The descriptions of hull, propelling machineries, power plant, trial trips and towing tests are successively set forth.