by katana » Fri Apr 26, 2024 12:50 am
CHAPTER 05. AFT SHIP
Step 05.01. Main Cables Nr 1&4 Double Splits & Joints above the Aft Ship
Gentlemen,
Today we will talk about the double splits and joints on Main Cables Nr 1 & 4. (MC1&4)
The last time that MC1&4 were discussed, was in step 03.01. �Rigging of MC1&4 from Bridge Main Yards to Side Mast arm Tips�.
In that specific rigging step we saw that MC1&4 departed at the Bridge Main Yards and arrived at the Front tip Lug on both Side Masts.
In todays rigging step, MC1&4 depart from the Side Masts Aft tip Lugs (port & starboard) towards the Crane-tip on Yamato�s Stern.
But before they arrive there, a lot of structural changes will be part of their journey.
Notice :
As a reference I use 2 schematic drawings : pictures 001 & 002. They served in rigging step 05.00. but their contents & info are suitable for this rigging step.
As regards to Pic 003 - 004 & 005: Not every picture shows the same kind of details. Let me explain:
Pic 003 is a rear view picture that shows you very well the proportions of MC1&4 towards the Mast beams. It also shows the individual dimensions and distances between Split Points Nr 0-1-2-3-4-8-9 and the 2 brown ball-insulators near start point Nr 0 (yellow circles).
Also distinctive in this picture: the departure points of Port Side Cables D-E-F-H-I. On the other hand : the starboard cables and split points are very hard to discover, due to the Black back-ground colour of the Funnel. But when you use your zoom, you may find them.
Pic 004 is a SIDE view picture that I introduced with only 1 goal: to show you the dimensions and proportions of all cables on MC1 &4 above the Aft ship.
When you look very close at this picture you can see :
a)the individual dimensions and distances between Split Points Nr 0-1-2-3-4-8-9.
b)the dimensions of all the cables that come down to the deck.
c) the relative position of the split points & cables towards the Aft AAA platform, the 155mm Gun Antenna and towards the Gun Barrels. Important : the yellow striped line, marked with Red arrows shows you MC4 Joint Nr 10 that indicates the end of cables D&E but also the left end of the Aft Ship Rigging Area. And it also shows you the vertical position of the rigging area towards the barrels of the 46cm Aft Gun Barrels.
d)the arrival of cables on the AAA platform Front Railing Brackets and the cables reaching the 155mm Gun Antenna : they are clearly visible in this picture but in a side -view they loose too much detail to be numbered or tagged.
Pic 005 is a Side view, ideal to show you the distance between MC 1&4, and the dimensions & proportions of the Aft Ship cables.
This picture was used to show you detail of all the split points, joints and cables near the Side Masts.
What you didn�t see in Pic 003 & 004, but what is exposed and colour- marked & numbered in this Pic 005 : the arrival of the 2 cables �F� on the AAA platform Front Railing Brackets (joint Nr 5). Also marked: the arrival of the cables (B-H-I) on the 155mm Gun Antenna, on port and starboard side. In this picture, certainly MC4 lends itself better to show details of the Aft Ship Rigging. Due to the capture angle in this picture, MC1 is not that suitable.
So far the list of what is different in pictures 003-004 and 005.
What is common in the pictures and drawings : I used the same Colours, Branch Nrs, Split Point Nrs and Cable Letters.
Much easier to compare details from pictures with the schematic drawings and vice-versa.
Before we start, I would like to emphasize on a subject that will be used in this rigging step : The � Triangle Branch / Joint�.
This device is in fact a cable split- or branch where the original incoming cable is duplicated from a single into a double one.
Not far from the split point where the incoming cable is duplicated, a solid rod is attached perpendicular between the 2 cable members. That�s the reason why this particular Branch looks like a �Triangle�.
Typical for a Triangular Branch is that the distance between the 2 cables remains constant untill another triangle is installed and the opposite procedure is applied. When the 2 cable members arrive at the second rod, short after, the 2 cables are merged back together to form 1 single Cable. In our case: MC1 or MC4.
One can say that a Triangular Branch is the opposite, or the mirror view of a Triangular Joint: and this is exactly what happens above the Aft Ship on Yamato with MC1 and MC4.
Let�s start.
In chronological order this is what happens with MC1&4 above the Aft Ship:
Main Cables Nr1&4 depart, at the Side Mast Aft tip Lugs in
startpoint Nr 0. Near the start points , both cables run trough a Brown Ball Insulator. Not far from the Side Masts, MC1& 4 reach Branch Nr 1, where they are split via a triangle branch into cables D& E. These Cables continue their way to the Crane-tip on Yamato�s Stern.
Immediately after Branch Nr 1, we meet Branch Nr 2 & 3, where 2 short cables are attached to cables D&E. The short cables are brought together in Joint Nr 4. In Pic 003 and 005 you get a good view how close Branch Nr 2&3 is located near Branch Nr1.
The same goes for Joint Nr 4 : the cables that extend from Branches 2&3 are quite short and Joint Nr 4 is installed right after the short cables.
Out of Joint Nr 4, Cable �F� emerges and goes down to the bracket Nr 5 on the Front Railing of the Aft AAA Platforms.
On Cables �D�&�E�, not so far behind Branches Nr 2&3, we encounter 2 new Branches: Nr 8 & Nr 9.
From here, 2 new cables emerge and go down to the Brackets on the Aft 155 Gun Antenna. The same process takes place on port and starboard side, but in Mirror View.
Please check the cable names and Joint nrs in Pic 003-004 & 005.
From Branch Nr 8 & 9, Cables D & E ( port side) and cables D& E (starboard side) proceed to the crane tip on the stern. Above the 46cm Gun, little before the end of the barrels, cables D&E are back joint into MC1 & MC4 in Cable Joint Nr 10.
From Cable Joint Nr 10, MC1 & MC4 resume their way to the crane tip on the stern.
So far the MC1 & MC4 double cable splits above the Aft Ship.
Insulator Count
We see 2 brown ball insulators : one on MC1 and one on MC4 near the Side Masts. See yellow circles in Pic 003 and red circles in Pic 005, both near start point Nr 0.
Pic 002 shows you the schematic position of the insulators on MC1 & MC4.
Total amount of Insulators used in this rigging step : Qty = 2 Brown Ball Insulators .
This is the end of step 05.01. Double Splits & Joints of Main Cables Nr 1 & 4 above the Aft Ship
Next Rigging Step: 05.02. Cables to Aft 155mm Gun Antenna
Gentlemen,
have a nice day.
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CHAPTER 05. AFT SHIP
Step 05.01. Main Cables Nr 1&4 Double Splits & Joints above the Aft Ship
Gentlemen,
Today we will talk about the double splits and joints on Main Cables Nr 1 & 4. (MC1&4)
The last time that MC1&4 were discussed, was in step 03.01. �Rigging of MC1&4 from Bridge Main Yards to Side Mast arm Tips�.
In that specific rigging step we saw that MC1&4 departed at the Bridge Main Yards and arrived at the Front tip Lug on both Side Masts.
In todays rigging step, MC1&4 depart from the Side Masts Aft tip Lugs (port & starboard) towards the Crane-tip on Yamato�s Stern.
But before they arrive there, a lot of structural changes will be part of their journey.
[u]Notice [/u]:
As a reference I use 2 schematic drawings : [u]pictures 001 & 002[/u]. They served in rigging step 05.00. but their contents & info are suitable for this rigging step.
As regards to [u]Pic 003 - 004 & 005[/u]: Not every picture shows the same kind of details. Let me explain:
[u]Pic 003[/u] is a rear view picture that shows you very well the proportions of MC1&4 towards the Mast beams. It also shows the individual dimensions and distances between Split Points Nr 0-1-2-3-4-8-9 and the 2 brown ball-insulators near start point Nr 0 (yellow circles).
Also distinctive in this picture: the departure points of Port Side Cables D-E-F-H-I. On the other hand : the starboard cables and split points are very hard to discover, due to the Black back-ground colour of the Funnel. But when you use your zoom, you may find them.
[u]Pic 004[/u] is a SIDE view picture that I introduced with only 1 goal: to show you the dimensions and proportions of all cables on MC1 &4 above the Aft ship.
When you look very close at this picture you can see :
a)the individual dimensions and distances between Split Points Nr 0-1-2-3-4-8-9.
b)the dimensions of all the cables that come down to the deck.
c) the relative position of the split points & cables towards the Aft AAA platform, the 155mm Gun Antenna and towards the Gun Barrels. Important : the yellow striped line, marked with Red arrows shows you MC4 Joint Nr 10 that indicates the end of cables D&E but also the left end of the Aft Ship Rigging Area. And it also shows you the vertical position of the rigging area towards the barrels of the 46cm Aft Gun Barrels.
d)the arrival of cables on the AAA platform Front Railing Brackets and the cables reaching the 155mm Gun Antenna : they are clearly visible in this picture but in a side -view they loose too much detail to be numbered or tagged.
[u]Pic 005 [/u]is a Side view, ideal to show you the distance between MC 1&4, and the dimensions & proportions of the Aft Ship cables.
This picture was used to show you detail of all the split points, joints and cables near the Side Masts.
What you didn�t see in [u]Pic 003 & 004[/u], but what is exposed and colour- marked & numbered in this [u]Pic 005 [/u]: the arrival of the 2 cables �F� on the AAA platform Front Railing Brackets (joint Nr 5). Also marked: the arrival of the cables (B-H-I) on the 155mm Gun Antenna, on port and starboard side. In this picture, certainly MC4 lends itself better to show details of the Aft Ship Rigging. Due to the capture angle in this picture, MC1 is not that suitable.
So far the list of what is different in [u]pictures 003-004 and 005[/u].
What is common in the pictures and drawings : I used the same Colours, Branch Nrs, Split Point Nrs and Cable Letters.
Much easier to compare details from pictures with the schematic drawings and vice-versa.
Before we start, I would like to emphasize on a subject that will be used in this rigging step : The � Triangle Branch / Joint�.
This device is in fact a cable split- or branch where the original incoming cable is duplicated from a single into a double one.
Not far from the split point where the incoming cable is duplicated, a solid rod is attached perpendicular between the 2 cable members. That�s the reason why this particular Branch looks like a �Triangle�.
Typical for a Triangular Branch is that the distance between the 2 cables remains constant untill another triangle is installed and the opposite procedure is applied. When the 2 cable members arrive at the second rod, short after, the 2 cables are merged back together to form 1 single Cable. In our case: MC1 or MC4.
One can say that a Triangular Branch is the opposite, or the mirror view of a Triangular Joint: and this is exactly what happens above the Aft Ship on Yamato with MC1 and MC4.
Let�s start.
In chronological order this is what happens with MC1&4 above the Aft Ship:
Main Cables Nr1&4 depart, at the Side Mast Aft tip Lugs in
startpoint Nr 0. Near the start points , both cables run trough a Brown Ball Insulator. Not far from the Side Masts, MC1& 4 reach Branch Nr 1, where they are split via a triangle branch into cables D& E. These Cables continue their way to the Crane-tip on Yamato�s Stern.
Immediately after Branch Nr 1, we meet Branch Nr 2 & 3, where 2 short cables are attached to cables D&E. The short cables are brought together in Joint Nr 4. In [u]Pic 003 and 005[/u] you get a good view how close Branch Nr 2&3 is located near Branch Nr1.
The same goes for Joint Nr 4 : the cables that extend from Branches 2&3 are quite short and Joint Nr 4 is installed right after the short cables.
Out of Joint Nr 4, Cable �F� emerges and goes down to the bracket Nr 5 on the Front Railing of the Aft AAA Platforms.
On Cables �D�&�E�, not so far behind Branches Nr 2&3, we encounter 2 new Branches: Nr 8 & Nr 9.
From here, 2 new cables emerge and go down to the Brackets on the Aft 155 Gun Antenna. The same process takes place on port and starboard side, but in Mirror View.
Please check the cable names and Joint nrs in [u]Pic 003-004 & 005.[/u]
From Branch Nr 8 & 9, Cables D & E ( port side) and cables D& E (starboard side) proceed to the crane tip on the stern. Above the 46cm Gun, little before the end of the barrels, cables D&E are back joint into MC1 & MC4 in Cable Joint Nr 10.
From Cable Joint Nr 10, MC1 & MC4 resume their way to the crane tip on the stern.
So far the MC1 & MC4 double cable splits above the Aft Ship.
[u]Insulator Count[/u]
We see 2 brown ball insulators : one on MC1 and one on MC4 near the Side Masts. See yellow circles in [u]Pic 003[/u] and red circles in [u]Pic 005[/u], both near start point Nr 0.
[u]Pic 002[/u] shows you the schematic position of the insulators on MC1 & MC4.
Total amount of Insulators used in this rigging step : Qty = 2 Brown Ball Insulators .
This is the end of step 05.01. Double Splits & Joints of Main Cables Nr 1 & 4 above the Aft Ship
Next Rigging Step: 05.02. Cables to Aft 155mm Gun Antenna
Gentlemen,
have a nice day.