IJN Heian Maru by RGL - FINISHED - Hasewaga - 1/350 - PLASTIC - Sub depot ship

[Jim Lad]

Greg,

 

Everyday cargo gear is quite straight forward (heavy lift gear can be a bit more complex).  First, there is a topping lift (called a span in your second illustration), which lifts the derrick to the required height and then holds it in position.  There a several ways of operating this - the most common I came across was a 'monkey face' - a triangular face plate - shackled to the topping lift with a tackle (single blocks) and a chain shackled to the other two eyes of the plate. The running end of the tackle ran through a block on deck and to one of the winch drum ends when the derrick was being raised or lowered.  when at its working height the chain was shackled to an eyebolt at the foot of the mast and the tackle let go.  The derricks were usually operated in 'union purchase - both derricks operating together; one centred over the hold and the other over the side. The slew of the derricks was controlled by the outboard guys (slewing guy pennant in second drawing) which were shackled to eyebolts on the bulwark capping with a cleat for the running end close by on the bulwark. The span (schooner guy in second drawing) connected the two derrick heads and ran to a cleat (anywhere convenient back near the derrick heel).  The preventer guys shown in the second drawing may or may not have been rigged, depending on where the ship was operating.  They were required in Australia but not in most of the far east or Europe. The preventers were a single heavy wire shacked to the derrick head and, once the derrick was in its working position, the lower end was shacked to an eyebolt on the bulwark capping using a preventer stopper as in the image below.  The idea of the preventer was to act as a safety wire in case the outboard guy carried away under load. Finally there are the runners - the wires that run from the winch drums to the cargo hook via the derrick cargo blocks. in union purchase the two runners are shackled to two eyes of a 'monkey face' and the cargo hook is shacked to the third eye (the mouth?). And you're all ready to load or discharge cargo.  when at sea derricks were always stowed. i have done one short voyage with derricks 'flying' but not a good idea.  In most jurisdictions a ship was not allowed to sail until the derricks were properly stowed.

 

If this isn't as clear as I think it is or if you need any more detail - yell! 

 

John

 

[RGL]

Yeah Jim I’m confused ! I’m the bloke in the back row who’s hard of hearing 

[RGL]

Back to the hull. Re masking the waterline in reverse, a light dusting of white with the airbrush. Next will be the AK salt on the water line 

[Jim Lad]

Quote

Yeah Jim I’m confused !

Just take it one bit at a time, Greg.

 

You need to be able to get the derrick higher or lower - achieved with the topping lift.

 

You need to move the derrick from side to side - use the outboard guy and the span.

 

Maybe you need to make the whole rig a bit safer to use - make sure the preventer is rigged on each derrick.

 

You will ceretainly need to raise and lower goods of some kind - hook on the runner and away you go.

 

John

 

[RGL]

My plan is to have one lowering a torpedo on one side forward and picking up cargo on the other side aft 

[RGL]

Salt on the waterline 

[mtaylor]

Hmm.... all those blokes in the audience of the lecture are wearing facemasks.   I guess COVID has been around  a lot longer than we think.   LOL.

[RGL]

I can’t see any masks? 
 

anyhow, hull pretty much done, rust and grunge 

[SigEp Ziggy]

Always fantastic work!

[bwross11]

Looking very convincing.  A question, what did you use to do the salt?  Any tricks required to apply?

 

thanks

Bruce

[RGL]

AK makes a salt product but you need to use it very sparingly as it’s bloody strong, thus I did a white diluted undercoat L. They have a tutorial on Utube 

Edited January 5, 2023 by RGL

[cog]

On 1/3/2023 at 2:46 AM, RGL said:

My plan is to have one lowering a torpedo on one side forward and picking up cargo on the other side aft 

As long as you do not load the cargo on board your subs, when those are low on explosive cigars 😇

[cog]

20 hours ago, RGL said:

AK makes a salt product but you need to use it very sparingly as it’s bloody strong, thus I did a white diluted undercoat L. They have a tutorial on Utube 

used it on one of my destroyers, maybe it wasn't as strong when I bought my pot of stain

[RGL]

So days of work, doing the little bits for the deck, vents, winches, bits and Davits. Next in the cue is the guns and other deck fittings before the winches and then the railings. Finally I have a heap of extras to go on the deck plus figures.  

[RGL]

Lots of deck details added (you wouldn’t know it. I’ll probably dull down the deck yet, ladders and railings and masts etc etc etc to go. 

 

Edited January 6, 2023 by RGL

[RGL]

Now I’ve used a dark yellow wash to tone down the deck. Grubby but I like it better than the bright tan  

[cog]

Vast improvement, RGL. That yellowish tinge didn’t look ver realistic

[RGL]

Guns and ladders added today. Next will be railings I think. 

[Canute]

That wash worked a treat for your decks. Big improvement, Greg. 👍

[RGL]

The cargo booms and the PE fittings. A few days work 

[RGL]

Rigging the single (small) cargo booms. 

[RGL]

Front mast done. I have it rigged to it will be slinging a torpedo outboard starbord 

[Jim Lad]

Greg, If your discharging a torpedo on the starboard side, the the port derrick should be rigged over the hatch square.

 

John

[RGL]

I’m hopeless of left and right! The subs will be nestled on the left / Port/ Red!!! 

[RGL]

A lot of rigging for one day. 

[Old Collingwood]

Amazing work  Greg  -  the  master  is  in his  prime  -  so  glad  we have   you  in our  forum   brother  -  thank  you.

 

OC.

[RGL]

All these cool peoples, how could I not be? 

[AJohnson]

Hi Greg, that rigging is really good.  Apologies if you have explained on other builds, but what do you use for the rigging threads?

[Jim Rogers]

That is most definitely a work of art. 

[yvesvidal]

Incredible rigging. What a work of Love and Patience.

 

Yves