Dockwise公司及heavy transport vessel介绍

strawberry

Dockwise（荷兰到克怀斯重大件海运有限公司）简介：
Dockwise is a leading specialist in heavy transport shipping operating a fleet of 15 semi-submersible vessels primarily servicing clients in the marine and oil & gas industry. Experience, innovative concept solutions and a team of highly skilled, dedicated professionals enable Dockwise to meet complex ocean transportation requirements according to high quality and safety standards. Dockwise can offer a variety of solutions including the total marine scope for projects that seem inconceivable.
拥有一支世界上最大的半潜船船队，几近垄断海洋平台运输安装领域的Dockwise 在上海海事展上也有一个相当规模的展台，相信去过的朋友都还记得他们的标志性船（队）：Heavy transport Vessel.

Dockwise 的 slogan 和 logo

Consider it done！Dockwise！

strawberry

现在来看看Heavy transport vessel 是如何工作的
例如，要托起一个海洋平台
首先：压载舱内打满水，让船半潜入还水中：

strawberry

用小船将海洋平台推到htv的甲板上：

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固定

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打出压载水，HTV 浮起

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Departure!

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Open-deck vessels 介绍
The semi-submersible heavy transport vessels all have a large, unobstructed deck which provides a safe platform for efficient and economical transportation of a wide variety of large cargoes. Loading and discharging options include float-on/float-off, roll-on/roll-off, skid-on/skid-off, lift-on/lift-off or any combination of these methods.

下面三条船都属于这种类型：

Mighty Servant 1

Mighty Servant 1 is able to carry the heaviest semi-submersible drilling units, harsh environment deep water jack-up rigs and large floating production platforms like TLP's, FPU's and spars with drafts of up to 14 metres. The specially strengthened unobstructed cargo deck of 150 metres long by 50 metres wide provides an unequalled footprint support for these types of cargo. The vessel -in empty condition- is capable of achieving a minimum draft of 4 metres, which allows berthing alongside shallow draft load-out quays.

Principal characteristics:   
Length o.a.  190.03 m
Length b.p. 174.70 m
Breadth 50.00 m
Depth 12.00 m
Draft sailing 8.77 m
Draft submerged 26.00 m
Draft minimum 4.00 m
Max. cargo draft 14.00 m
   
Gross tonnage 29,193 t
Deadweight 40,190 t
   
Deck space 50 x 150 m
Deck load 19-40 t/sq.m
Cargo hold 50 x 16 x 7.5 m
Hatch 31 x 14.6 m
   
Speed   
Service  14 kn
Maximum 15 kn
Range 59 days

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Mighty Servant 1

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Mighty Servant 3
Mighty Servant 3 has an open deck of 40 metres wide and 140 metres long. The option to remove the aft buoyancy casings offers additional flexibility, allowing cargo overhang on three sides of the ship. The vessel can move cargoes weighing up to 25,000 tons.
Mighty Servant 3 is equipped with a counter weight system enabling use of the ship's horizontal semi-submersible capabilities without using the aft buoyancy casings. Thanks to this system Mighty Servant 3 is capable of loading/discharging floating cargoes overhanging all three sides of the 40 metres wide cargo deck.

Principal characteristics   
Length o.a.  181.23 m
Length b.p. 168.93 m
Breadth 40.00 m
Depth 12.00 m
Draft sailing 9.06 m
Draft submerged 22.00 m
   
Gross tonnage  22,391 t
Deadweight  27,720 t
Deck space  40 x 140 m
Deck load  19-25 t/sq.m
Cargo hold 100 x 16 x 7.5 m
Hatch  31 x 14.6 m
   
Speed   
Service  14 kn
Maximum  15 kn
Range  44 days

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Transshelf
The Transshelf is a semi-submersible heavy transport carrier of a design which shows strong resemblance to the Servant class vessels. The vessel combines advantages found in both Super and Mighty Servant class carriers, with a deadweight capacity of 34,030 tons and an unobstructed deck area of some 5,280 sq.m.

Principal characteristics   
Length o.a. 173.00 m
Length b.p. 162.00 m
Breadth 40.00 m
Depth 12.00 m
Draft sailing 8.80 m
Draft submerged 21.00 m
   
Gross tonnage 26,547 t
Deadweight 34,030 t
Deck space 40 x 132 m
Deck load 19-25 t/sq.m
Cargo holds 2 x 10 x 4 x 6 m
   
Speed   
Service  14 kn
Maximum 15 kn
Range 44 days

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Open-deck/dual cargo vessels 介绍

These semi-submersible open-deck heavy transport vessels offer the advantage of dual cargo capacity: they can carry heavy loads on deck and clean product in their cargo tanks. They can also submerge to load and discharge by means of the float-on/float-off method. Roll-on/roll-off, skid-on/skid-off and lift-on/lift-off procedures can also be employed. The ships can swiftly be converted from heavy-transport mode into product carriers, and vice versa. Our dual cargo vessels are the Swan, Tern, Swift & Teal.

暂时无图片

strawberry

关于这类型船的稳性校核比较复杂。

jorgenhojmann

是吗？
我老板就给广远的两条半潜船
做稳性方面的咨询
感觉是有点复杂

但也不至于是太复杂
GHS
AUTOSHIP
NAPA
ECAD
都可以做这方面的工作

kittyhello

jorgenhojmann和strawberry两位大佬应该有的讨论啊，也让大家学习一下嘛。DOCKWISE......怀念ing。

stig_x

感觉结构也应该比较复杂啊:不知道作用力在什么位置, 总不可能整个货舱区域都做强结构吧,如果这样, 钢结构重量就太多了. 疑问ing

jorgenhojmann

每个航次
都需要做一个设计
算一下稳性
绑扎
强度
都要考虑

所以
一般
装一次货
就要改装一次

strawberry

这种船计算稳性时要分好几种情况
1、在装着东西满世界跑得时候，要满足IMO749的相关规定。破舱稳性亦是如此。
2、在下浅过程中则根据ILL 来校和稳性及破舱稳性。

根据所装货物的不同计算也不同。若是运载可以自浮的运输海洋平台，则计算稳性时可以计入货物的浮力。前几张照片就是运送可以自浮的平台。卸下海洋平台的过程与上面说的过程正好相反。
如果是运送其他不带浮力重物，不仅计算时不能计入货物的浮力，还会影响到装卸货的过程。装不带浮力的重物时，一般码头或目的地都要提供特定配套的装货、卸货设施，如浮桥等。

strawberry

jorgenhojmann wrote:
是吗？
我老板就给广远的两条半潜船
做稳性方面的咨询
感觉是有点复杂

但也不至于是太复杂
GHS
AUTOSHIP
NAPA
ECAD
都可以做这方面的工作

说复杂不是说计算过程复杂，现在一般的计算软件都可算。
关键是对于这种船没有明确的规定到底如何来计算。
好像荷兰的一个什么组织 反正是管海事安全方面的
提供了对这种类型船的稳性要求。
同时船东也会提出比规范苛刻的很多的条件。

稳性计算的复杂 不在于过程 而在于如何开始 呵呵

kittyhello

好，两位大师继续研究，常发表一些见解给大家开开眼，如果我没有记错，Might Servant 的甲板厚度是38~40 DH36的。其它船也差不多。原来还有一套这个船的结构资料，时间太久就扔掉了，可惜啊。

strawberry

对了 货物都是焊接在甲板上的，不仅仅是普通的绑扎~ 呵呵
甲板是很厚的 kittyhello说的对