JPH07196079A - Semisubmersible ship-type working ship - Google Patents
Semisubmersible ship-type working shipInfo
- Publication number
- JPH07196079A JPH07196079A JP34983993A JP34983993A JPH07196079A JP H07196079 A JPH07196079 A JP H07196079A JP 34983993 A JP34983993 A JP 34983993A JP 34983993 A JP34983993 A JP 34983993A JP H07196079 A JPH07196079 A JP H07196079A
- Authority
- JP
- Japan
- Prior art keywords
- ship
- boat
- shape
- work
- sponson
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、広くは船舶に関し、
特に、海洋上の特定の地点に一定期間留まって作業を行
ない、且つ、比較的頻繁に移動を伴う作業船に関するも
のである。This invention relates generally to ships,
In particular, the present invention relates to a work boat that stays at a specific point on the ocean for a certain period of time to perform work, and that moves relatively frequently.
【0002】[0002]
【従来の技術】従来、海洋上の特定の地点に一定期間留
まって作業を行ない、しかも比較的頻繁に移動を伴うよ
うな場合に使用される作業船として、箱型バ−ジ船型ま
たは通常の船の船型の作業船を採用することが多い。図
6は、従来の通常の船の船型をした作業船の1例を示す
概略側面図であり、図7は、図6のD−D線矢視図であ
る。船体の中央部に作業用の構造物 が積載されてい
る。これらの船型の作業船はいずれも、移動時に海水か
ら受ける抵抗が小さいので移動性能に優れている。従っ
て、移動を頻繁に行う作業の場合には効率的である。し
かしながら、波浪に対する動揺性能は一般に劣り、荒天
時には作業船の動揺が激しいために作業を停止せざるを
えず、作業中断時間が長くなり作業効率が悪い。2. Description of the Related Art Conventionally, a box-type barge type or a normal type of work vessel has been used as a work vessel used when working at a specific point on the ocean for a certain period of time and working relatively frequently. Workboats of the ship type are often adopted. FIG. 6 is a schematic side view showing an example of a conventional work boat in the form of a conventional ship, and FIG. 7 is a view taken along the line DD of FIG. A work structure is loaded in the center of the hull. All of these boat-type work boats are excellent in movement performance because the resistance received from seawater during movement is small. Therefore, it is efficient in the case of work that requires frequent movement. However, the rocking performance against waves is generally inferior, and the work ship has to be violently shaken in stormy weather, so that the work must be stopped, and the work interruption time becomes long, resulting in poor work efficiency.
【0003】これに対して上記のような作業中断が少な
く、作業時の性能を重視した作業船として、セミサブ型
(半潜水式)海洋構造物がある。図8は、従来の半潜水
式海洋構造物の1例を示す側面概略図であり、図9は、
図8のE−E線矢視図である。作業用の構造物6が積載
された甲板部7を支柱部8が連結・支持し、支柱部8の
下端には浮体9が固定されている。従って、従来の半潜
水式海洋構造物は、荒天時の波浪に対する動揺性能に関
して通常の船型の作業船に比べてはるかに優れており、
厳しい海象条件下においても作業を継続することができ
る。On the other hand, there is a semi-sub type (semi-submersible) offshore structure as a work ship which is less likely to be interrupted as described above and emphasizes performance during work. FIG. 8 is a schematic side view showing an example of a conventional semi-submersible offshore structure, and FIG.
It is a EE line arrow line view of FIG. A pillar 8 connects and supports a deck 7 on which a work structure 6 is loaded, and a floating body 9 is fixed to the lower end of the pillar 8. Therefore, the conventional semi-submersible offshore structure is far superior to the normal ship-type work boat in terms of its swaying performance against waves in rough weather,
Work can be continued even under severe sea conditions.
【0004】[0004]
【発明が解決しようとする課題】このように、従来の半
潜水式海洋構造物は波に対する動揺性能に極めて優れて
いる。しかしながら、反面、機動性に欠け移動性能が劣
る。その理由は、水面上の甲板部と水中の浮体部を連結
する支柱部が水面を貫通しているため、半潜水式海洋構
造物が移動する時に支柱部が海水から大きな抵抗力を受
け、また潮流からも大きな外力を受けることにある。従
って、支柱部に受けるこのような力を低減することが移
動性能を向上させるために重要となる。一方、移動性能
に優れた従来の通常の船の船型をした作業船は波に対す
る動揺性能に劣り、作業効率が海象条件に大きく左右さ
れる。As described above, the conventional semi-submersible offshore structure is extremely excellent in sway performance against waves. However, it lacks mobility and is inferior in mobility. The reason is that the pillar that connects the deck on the water surface and the underwater floating body penetrates the water surface, so when the semi-submersible offshore structure moves, the pillar receives a large resistance from seawater, and It is to receive a large external force from the tidal current. Therefore, it is important to reduce such a force received by the column in order to improve the moving performance. On the other hand, a work boat of a conventional ordinary ship, which has excellent mobility, is inferior in swaying performance against waves, and work efficiency is greatly influenced by sea condition.
【0005】従って、この発明の目的は、従来の半潜水
式海洋構造物の優れた動揺性能を備えつつ、しかも、従
来の通常の船の船型をした作業船の優れた移動性能をも
備えた、海洋上における作業船を提供することにある。Therefore, an object of the present invention is to provide not only excellent shaking performance of a conventional semi-submersible type offshore structure, but also excellent moving performance of a work boat that has the shape of a conventional ordinary ship. , To provide work vessels on the ocean.
【0006】[0006]
【課題を解決するための手段】上記課題を解決するため
の基本的考え方は、作業時に船体が波から受ける上下方
向の力をできるだけ小さくして優れた動揺性能を得るた
めに、所謂2次元波無し断面形状をなした船型とし、し
かも、移動時に海水および潮流から船体が受ける力をで
きるだけ小さくして優れた移動性能を得るために、従来
の通常の船の船側形状に近い船型とする点にある。従っ
て、船側部形状を通常の船の船側部形状に準じた形状と
し、その上で、作業時状態においては水線幅よりも広い
全幅を有する垂直断面形状を有する部分を船側部分とし
て有し、しかも、移動時状態においては、前記船側部分
に吃水線がくるような船型とすることにって解決され
る。そのような船型の作業船として、下記の半潜水式船
型作業船を発明した。[Means for Solving the Problems] The basic idea for solving the above problems is that the so-called two-dimensional wave is used in order to obtain an excellent shaking performance by minimizing the vertical force that the ship receives from the waves during work. There is no hull with a cross-sectional shape, and in addition, in order to minimize the force that the hull receives from seawater and tidal current during movement to obtain excellent moving performance, the hull shape should be close to the shape of the side of a conventional normal ship. is there. Therefore, the ship side shape is a shape conforming to the ship side shape of a normal ship, and in addition, in the working state, it has a part having a vertical cross-sectional shape having a wider width than the waterline width as a ship side part, Moreover, in the moving state, the problem is solved by making the boat shape such that the water line is located on the side portion of the ship. As such a boat-type work boat, the following semi-submersible boat-type work boat was invented.
【0007】この発明の請求項1の半潜水式船型作業船
は、海洋上で使用される作業船であって、通常の船の船
側形状に準じた形状の船側を有し、前記船側の両側下部
に船側張出し部を有し、前記船側張出し部の形状は通常
の船の船側形状に準じた形状であって、しかも、前記船
側張出し部の全幅(幅が最大である部分の幅)は前記船
側の水線幅(水面が船側を横切る幅)よりも広いことに
特徴を有するものである。A semi-submersible boat type work boat according to claim 1 of the present invention is a work boat used on the sea, and has a boat side having a shape conforming to the boat side shape of an ordinary ship, and both sides of the boat side. It has a ship-side overhang at the bottom, and the shape of the ship-side overhang is similar to the ship-side shape of an ordinary ship, and the overall width of the ship-side overhang (the width of the part with the maximum width) is the same as the above. It is characterized by being wider than the water line width on the ship side (width across which the water surface crosses the ship side).
【0008】この発明の請求項2の半潜水式船型作業船
は、請求項1において、船側張出し部の船首部および船
尾部の上端面の位置が、船側張出し部の中央部の上端面
の位置よりも高いことに特徴を有するものである。According to a second aspect of the present invention, in the semi-submersible boat type work boat according to the first aspect, the positions of the upper end surfaces of the bow and the stern of the boat-side overhanging portion are the positions of the upper end surface of the central portion of the boat-side overhanging portion. It is characterized by being higher than.
【0009】この発明の請求項3の半潜水式船型作業船
は、請求項2において、船側張出し部の船首部および船
尾部の各々の長さの、船側張出し部全長に対する割合
が、いずれも20〜30%の範囲内であることに特徴を
有するものである。According to a third aspect of the present invention, in the semi-submersible boat type work boat according to the second aspect, the ratio of the length of each of the bow portion and the stern portion of the boat-side overhanging portion to the total length of the boat-side overhanging portion is 20. It is characterized by being in the range of ˜30%.
【0010】[0010]
【作用】この発明の半潜水式船型作業船においては、そ
の船側形状が通常の船の船側形状に準じた形状を呈して
おり、船側の両側下部に設けられた船側張出し部もその
形状に倣って通常の船の船側形状に準じた形状をしてい
る。そして、移動する場合には吃水線が船側張出し部の
位置にくるように操船されるので、海水から受ける抵抗
力や潮流から受ける外力は、やや幅広の通常船型の作業
船と同程度の抵抗性能を確保することができ、通常船型
の作業船に準じた移動性能を発揮する。In the semi-submersible work boat according to the present invention, the shape of the side of the ship is in conformity with the shape of the side of an ordinary ship, and the side projections on both sides of the side of the ship also follow that shape. The shape is similar to that of an ordinary ship. When moving, the waterline will be operated so that it will be at the side of the ship-side overhang, so the resistance received from seawater and the external force received from tidal currents are the same as those of a slightly wider normal workboat. Can be secured, and exhibits movement performance similar to that of a normal work boat.
【0011】また、前記船側張出し部の全幅は、船側の
水線幅よりも広いので、作業時の吃水線が船側張出し部
よりも上の船側本体の部分にくるように操船すると、船
体断面形状が波無し断面形状となる。波無し断面形状を
呈した船体には、特定の波周期の近傍において上下方向
の波強制力を小さく抑制する作用が働くので、波浪中で
の上下揺れ応答を抑制する効果が生ずる。船側張出し部
はまた、船体の横揺れに対しては船側底部に設けられる
ビルジキ−ルや船底に設けられるボックスキ−ルと同様
に減揺装置として作用するので、船体の横揺れの抑制に
も効果がある。Further, since the entire width of the ship-side overhanging portion is wider than the waterline width on the shipside, when maneuvering so that the water line during operation comes to the part of the shipside main body above the shipside overhanging portion, the hull cross-sectional shape is formed. Has a waveless cross-sectional shape. The hull having a waveless cross-section has an effect of suppressing the vertical wave forcing force to be small in the vicinity of a specific wave period, and therefore has an effect of suppressing the ups and downs response in waves. The ship-side overhang also acts as a damping device against roll of the hull, like a bilge key provided at the bottom of the ship and a box key provided at the bottom of the ship, so that the hull can be prevented from rolling. effective.
【0012】次に、この発明の半潜水式作業船において
は、前記船側張出し部の上端面の位置に関して、船首部
および船尾部の上端面の位置が、中央部の上端面の位置
よりも高く設定されているので、船体長手方向を波の進
行方向に平行にすることにより、前記船側張出し部の上
端面の位置が船体長手方向に一定高さである場合に比べ
て、波による縦揺れモ−メントを小さくする作用が働く
ので、縦波状態での船体の縦揺れ応答を抑制する効果を
生ずる。Next, in the semi-submersible work ship of the present invention, the positions of the upper end surfaces of the bow side and the stern are higher than the positions of the upper end surface of the central portion with respect to the position of the upper end surface of the side protrusion. Since the longitudinal direction of the hull is parallel to the traveling direction of the waves, the vertical pitching mode caused by the waves is greater than that of the case where the position of the upper end surface of the ship-side overhang is at a constant height in the longitudinal direction of the hull. -Because of the action of reducing the size of the ment, it produces the effect of suppressing the pitching response of the hull in the longitudinal wave state.
【0013】[0013]
【実施例】この発明を実施例に基づいて説明する。図1
は、この発明の半潜水式作業船の1実施例を示す側面概
略図であり、図2、3および4はそれぞれ、図1のA−
A線、B−B線およびC−C線の断面図である。そして
図5は、図1の平面図である。EXAMPLES The present invention will be described based on examples. Figure 1
FIG. 2 is a schematic side view showing an embodiment of the semi-submersible work ship of the present invention, and FIGS. 2, 3 and 4 are respectively A- of FIG.
It is sectional drawing of the A line, the BB line, and the CC line. 5 is a plan view of FIG.
【0014】図1〜5において、1は船体、2は船側張
出し部、2a、2bおよび2cはそれぞれ船首部、船央
部および船尾部の船側張出し部、2p、2qおよび2r
はそれぞれ船首部、船央部および船尾部の船側張出し部
の上端面、3は船側本体、4は作業時状態の水線、5は
移動時状態の水線である。In FIGS. 1 to 5, 1 is a hull, 2 is a boat-side overhanging portion, 2a, 2b and 2c are bow-side, midship and stern-side overhanging portions, 2p, 2q and 2r, respectively.
Are the upper end faces of the bow side, the center part and the stern part of the projecting parts on the ship side, 3 is the ship side body, 4 is the working water line, and 5 is the moving water line.
【0015】船側本体3の形状は通常の船の船側形状に
準じた形状であり、その両側下部には船側本体3の形状
に倣って船側張出し部2が設けられている。即ち、船側
張出し部2の幅B2 は船側本体の幅B1 よりも広い。そ
して、船首部船側張出し部2aおよび船尾部船側張出し
部2cの上端面2p、2rの位置は同じ高さであって、
しかも船央部張出し部2bの上端面2qの位置よりも高
い。また、船首部船側張出し部の長さL1 および船尾部
船側張出し部の長さL3 の船側張出し部の全長Lに対す
る割合は、いずれも25%である。なお、この割合は2
5%に限定する必要はなく、20〜30%の範囲内であ
ればよく、当該船舶の船首尾の排水量の分布に応じて決
定する。The shape of the ship-side main body 3 is in conformity with the ship-side main body shape of a normal ship, and ship-side overhanging portions 2 are provided on the lower sides of both sides of the ship-side main body 3 so as to follow the shape of the ship-side main body 3. That is, the width B 2 of the boat-side overhanging portion 2 is wider than the width B 1 of the boat-side main body. And, the positions of the upper end surfaces 2p, 2r of the bow side ship side projecting portion 2a and the stern part ship side projecting portion 2c are the same height,
Moreover, it is higher than the position of the upper end surface 2q of the ship central portion overhanging portion 2b. Further, the ratio of the length L 1 of the bow side ship-side overhanging portion and the length L 3 of the stern ship-side overhanging portion to the total length L of the ship-side overhanging portion is 25%. This ratio is 2
It does not need to be limited to 5%, but may be in the range of 20 to 30%, and is determined according to the distribution of the drainage amount at the bow and tail of the ship.
【0016】上述したこの発明の半潜水式船型作業船の
操船に当たっては、作業時状態の水線は船側本体3に位
置するようにし、そして、移動時状態の水線は船側張出
し部2に位置するように、バラストの調整等によって行
う。また、作業時状態の水線面の幅、即ち船側本体の幅
B1 と水面下全幅、即ち船側張出し部2の幅B2 との
比、および、作業時状態の吃水H1 と船側張出し部2の
高さH2 との比は、当該船舶の稼働時における海域の海
象、特に波の周期に応じて最適値を選定する。In maneuvering the semi-submersible boat type work boat of the present invention described above, the water line in the working state is positioned on the boat side main body 3, and the water line in the moving state is positioned on the boat side overhang 2. Adjust the ballast as necessary. In addition, the width of the water surface in the working state, that is, the width B 1 of the ship-side main body and the total width below the water surface, that is, the width B 2 of the ship-side overhanging portion 2, and the water-saving water H 1 and the ship-side overhanging portion in the working state. The ratio of the height 2 to the height H 2 of 2 is selected as an optimum value in accordance with the sea condition of the sea area during operation of the ship, particularly the cycle of waves.
【0017】[0017]
【発明の効果】以上述べたように、この発明によれば、
海洋上の特定の地点に一定期間留まって作業を行ない、
しかも比較的頻繁に移動を伴うような場合に使用される
作業船に必要な、優れた動揺性能と優れた移動性能とを
兼備した作業船を得ることができる。従って、厳しい海
象条件下においても作業を中断することなく、作業効率
のよい半潜水式船型作業船を提供することができる、工
業上有益な効果がもたらされる。As described above, according to the present invention,
Work at a specific point on the ocean for a certain period of time,
Moreover, it is possible to obtain a work boat having both excellent rocking performance and excellent movement performance, which are required for a work boat used when moving relatively frequently. Therefore, it is possible to provide a semi-submersible hull work vessel with good work efficiency without interrupting work even under severe sea conditions, which is an industrially beneficial effect.
【図1】この発明の半潜水式作業船の1実施例を示す側
面概略図であある。FIG. 1 is a schematic side view showing an embodiment of a semi-submersible work boat of the present invention.
【図2】図1のA−A線の断面図である。FIG. 2 is a cross-sectional view taken along the line AA of FIG.
【図3】図1のB−B線の断面図である。3 is a cross-sectional view taken along the line BB of FIG.
【図4】図1のC−C線の断面図である。4 is a cross-sectional view taken along the line CC of FIG.
【図5】図1の平面図である。5 is a plan view of FIG. 1. FIG.
【図6】従来の通常の船の船型をした作業船の1例を示
す概略側面図である。FIG. 6 is a schematic side view showing an example of a conventional work boat having the shape of a conventional ship.
【図7】図6のD−D線矢視図である。FIG. 7 is a view taken along the line DD of FIG.
【図8】従来の半潜水式海洋構造物の1例を示す概略側
面図である。FIG. 8 is a schematic side view showing an example of a conventional semi-submersible offshore structure.
【図9】図8のE−E線矢視図である。9 is a view taken along the line EE of FIG.
1 船体、 2 船側張出し部、 2a 船首部船側張出し部、 2b 船央部船側張出し部、 2c 船尾部船側張出し部、 2p 船首部船側張出し部の上端面、 2q 船央部船側張出し部の上端面、 2r 船尾部船側張出し部の上端面、 3 船側本体、 4 作業時状態の水線、 5 移動時状態の水線、 6 構造物、 7 甲板部、 8 支柱部、 9 浮体、 B1 船側本体の幅、 B2 船側張出し部の幅、 H1 作業時の吃水、 H2 移動時の船首部および船尾部船側張出し部の高
さ。 H3 移動時の船央部船側張出し部の高さ。 L1 船首部船側張出し部の長さ、 L2 船央部船側張出し部の長さ、 L3 船尾部船側張出し部の長さ、 L 船側張出し部の全長。 1 hull, 2 side bulge, 2a bow side bulge, 2b midship side bulge, 2c stern side bulge, 2p top side of bow side bulge, 2q top midside bulge , 2r stern upper end surface of stern side projecting part, 3 ship side body, 4 water line in working state, 5 water line in moving state, 6 structure, 7 deck part, 8 strut part, 9 floating body, B1 Width of ship side body, B2 Width of overhang of ship side, H1 Draining water during work, H2 Height of the bow and stern of the stern on the side of the ship when moving
It is. H3 Height of the ship central overhang when moving. L1 Length of the overhang of the bow, L2 Length of the overhang part on the ship side, L3 Stern The length of the ship-side overhang, L The total length of the ship-side overhang.
【手続補正書】[Procedure amendment]
【提出日】平成6年6月16日[Submission date] June 16, 1994
【手続補正1】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Name of item to be amended] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【特許請求の範囲】[Claims]
───────────────────────────────────────────────────── フロントページの続き (72)発明者 森川 正夫 東京都千代田区丸の内一丁目1番2号 日 本鋼管株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masao Morikawa 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Pipe Co., Ltd.
Claims (3)
常の船の船側形状に準じた形状の船側を有し、前記船側
の両側下部に船側張出し部を有し、 前記船側張出し部の形状は通常の船の船側形状に準じた
形状であって、且つ、 前記船側張出し部の全幅は前記船側の水線幅よりも広い
ことを特徴とする、半潜水式船型作業船。1. A work boat used on the ocean, having a boat side having a shape conforming to the boat side shape of an ordinary boat, and having boat side projecting portions at both lower sides of the boat side, the boat side projecting portion. Is a shape conforming to the ship-side shape of an ordinary ship, and the overall width of the ship-side overhanging portion is wider than the waterline width on the ship-side.
の上端面の位置は、前記船側張出し部の中央部の上端面
の位置よりも高いことを特徴とする、請求項1に記載の
半潜水式船型作業船。2. The half according to claim 1, wherein the positions of the upper end surfaces of the bow and the stern of the boat side overhanging portion are higher than the positions of the upper end surfaces of the central portions of the boat side overhanging portions. Submersible work boat.
記船尾部の各々の長さの、前記船側張出し部全長に対す
る割合は、いずれも20〜30%の範囲内であることを
特徴とする、請求項2に記載の半潜水式船型作業船。3. The ratio of the length of each of the bow portion and the stern portion of the boat-side overhanging portion to the total length of the boat-side overhanging portion is in the range of 20 to 30%. The semi-submersible work boat according to claim 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5349839A JP2917789B2 (en) | 1993-12-29 | 1993-12-29 | Semi-submersible type work boat and method of maneuvering the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5349839A JP2917789B2 (en) | 1993-12-29 | 1993-12-29 | Semi-submersible type work boat and method of maneuvering the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07196079A true JPH07196079A (en) | 1995-08-01 |
JP2917789B2 JP2917789B2 (en) | 1999-07-12 |
Family
ID=18406467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5349839A Expired - Lifetime JP2917789B2 (en) | 1993-12-29 | 1993-12-29 | Semi-submersible type work boat and method of maneuvering the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2917789B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105216973A (en) * | 2015-10-27 | 2016-01-06 | 上海船舶研究设计院 | A kind of loading kickboard being applicable to half latent carrier |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60203594A (en) * | 1984-03-28 | 1985-10-15 | Nippon Kokan Kk <Nkk> | Joint structure between ship hull and bulge and joining method |
JPS63131893U (en) * | 1987-02-23 | 1988-08-29 | ||
JPH05278676A (en) * | 1992-04-06 | 1993-10-26 | Ishikawajima Harima Heavy Ind Co Ltd | Offshore work barge |
-
1993
- 1993-12-29 JP JP5349839A patent/JP2917789B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60203594A (en) * | 1984-03-28 | 1985-10-15 | Nippon Kokan Kk <Nkk> | Joint structure between ship hull and bulge and joining method |
JPS63131893U (en) * | 1987-02-23 | 1988-08-29 | ||
JPH05278676A (en) * | 1992-04-06 | 1993-10-26 | Ishikawajima Harima Heavy Ind Co Ltd | Offshore work barge |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105216973A (en) * | 2015-10-27 | 2016-01-06 | 上海船舶研究设计院 | A kind of loading kickboard being applicable to half latent carrier |
Also Published As
Publication number | Publication date |
---|---|
JP2917789B2 (en) | 1999-07-12 |
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