Author Topic: HMAS(CG) Sea Dragon  (Read 498 times)

Offline Old Wombat

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HMAS(CG) Sea Dragon
« on: June 04, 2019, 06:14:59 PM »
So, this is one of the two builds I hope to finish for this GB &, yes, despite my saying it didn't have to be a boat/ship, it's a ship.

In fact it's an Orange Hobby 1/350 Tarantul III Corvette, which will be "Westernised" & "Australianised" for service with the Royal Australian Navy Coast Guard.

Here she is as of 15 minutes ago:





(06/06/2019: Edited for a slight name change in the title.)
« Last Edit: June 06, 2019, 09:23:31 AM by Old Wombat »
"This is the Captain. We have a little problem with our engine sequence, so we may experience some slight turbulence and, ah, explode."

Offline Old Wombat

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Re: HMACGS Sea Dragon
« Reply #1 on: June 06, 2019, 12:23:35 AM »
At the end of Day 1's modelling session we have two incomplete hulls:



The smaller one is Sea Dragon, which has, so far, been the more difficult build - not least because the single-piece hull was moulded with a paper-thin port side & a starboard side verging on 3mm thick.
"This is the Captain. We have a little problem with our engine sequence, so we may experience some slight turbulence and, ah, explode."

Offline Old Wombat

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Re: HMAS(CG) Sea Dragon
« Reply #2 on: June 09, 2019, 01:10:19 AM »
No recent movement on this but I'm thinking Western gas turbines (R-R?) run a bit more efficiently than Russian ones, from what (little) I've read, which should improve her range slightly.

Now, if I add another cm or two to her length, that gives what appears to me to be a fairly significant increase in fuel storage when scaled up (3.5m/7m increase in length=approx. 30,000L/60,000L (realistic?*) increase in fuel load).

What I'm not sure about is how much that will improve the range (ie: Is it worth the effort?).


I'm also thinking of adding 2 (German?) marine diesel engines to 4 Rolls-Royce marine gas turbines & taking her from a COGAG propulsion system to a "CODOGAG" system (which is a whif melding of the CODOG & COGAG systems).



*: I got approx. 56,000L/112,000L if most of the extensions' volumes were filled with fuel but then decided that you'd probably only be able to use about half the total volume at best.




Of course this is all very technical & I'm probably over-thinking it but, sometimes, I can't help myself. :-\
"This is the Captain. We have a little problem with our engine sequence, so we may experience some slight turbulence and, ah, explode."

Offline Old Wombat

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Re: HMAS(CG) Sea Dragon
« Reply #3 on: June 12, 2019, 03:41:16 PM »
BTW, I've been engaged in several PSR sessions on this over the last few days, she's had (roughly) 15mm inserted just aft of the superstructure.

So, the model now measures 17cm long, which equates to about 59.5m (195' 3"), which means she's still 3.0m shorter than the average length of a Flower class corvette 62.5m (205').

(For my own benefit) I'll be going with 2 MTU 4000 16V 6,225 horsepower (4,642 kW) MAN diesels (developments of the engines used by the Armidale class patrol boats) & 4 x Solar Turbines (Caterpillar) Taurus 70 gas turbines (Output Power 8290 kW (11,110 hp)).


(EDIT: Gas Turbines changed after further research to slightly smaller units, each lighter & slightly more powerful than the Zorya-Mashproekt UGT6000's fitted to Tarantul class ships, which have UGT3000's instead of diesels.)
"This is the Captain. We have a little problem with our engine sequence, so we may experience some slight turbulence and, ah, explode."

Offline Old Wombat

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Re: HMAS(CG) Sea Dragon
« Reply #4 on: June 21, 2019, 05:46:58 PM »
Not much visible progress but much PSR & thinkin' have gone into this so far: Oh, she is 15mm longer & she has her first colour coat on!





With her stablemate:

"This is the Captain. We have a little problem with our engine sequence, so we may experience some slight turbulence and, ah, explode."

Offline Frank3k

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Re: HMAS(CG) Sea Dragon
« Reply #5 on: June 21, 2019, 10:59:03 PM »
The Orange Hobby Tarantuls look more detailed than the 1/400 Mirage plastic versions. The biggest issue with the Mirage kits are the solid masts for the radar gear.
Are you going to add the missile tubes?

Offline Old Wombat

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Re: HMAS(CG) Sea Dragon
« Reply #6 on: June 21, 2019, 11:24:41 PM »
Are you going to add the missile tubes?

No, this is going to be a Tarantul-like RAN Coast Guard vessel, primarily designed for border & fisheries protection with the secondary function of coastal shipping defence during wartime (when the ships will be cycled through the dockyards & fitted with Harpoon systems kits).
"This is the Captain. We have a little problem with our engine sequence, so we may experience some slight turbulence and, ah, explode."

Offline Jeffry Fontaine

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Re: HMAS(CG) Sea Dragon
« Reply #7 on: June 22, 2019, 01:41:05 AM »
Looking good like any inshore/coastal/littoral combatant should!

Quite a difference  in size when shown together like this.
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Offline Brian da Basher

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Re: HMAS(CG) Sea Dragon
« Reply #8 on: June 22, 2019, 02:55:05 AM »
Looking good like any inshore/coastal/littoral combatant should!

Quite a difference  in size when shown together like this.

Wot 'e said!

Brian da Basher

Offline Frank3k

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Re: HMAS(CG) Sea Dragon
« Reply #9 on: June 22, 2019, 06:31:03 AM »
It needs a couple of chain guns or other big pew-pew-pews at the rear of the superstructure. Those pirates aren't going to sink themselves!

Offline Volkodav

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Re: HMAS(CG) Sea Dragon
« Reply #10 on: June 22, 2019, 06:50:44 AM »
 :smiley:

Offline Old Wombat

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Re: HMAS(CG) Sea Dragon
« Reply #11 on: June 24, 2019, 06:46:07 PM »
Bloke I know's going somewhat cross-eyed building 5 x 1/350 scale R2-D2's for these builds! :-\

Then he's going to be building 4 x 1/350 scale 25mm Bushmaster systems, too! :-X


Thank the gods they're not 1/700 scale! :o
"This is the Captain. We have a little problem with our engine sequence, so we may experience some slight turbulence and, ah, explode."

Offline Frank3k

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Re: HMAS(CG) Sea Dragon
« Reply #12 on: June 25, 2019, 12:13:14 AM »
If you're building the Veteran Models 25mm Bushmaster... they are fiddly.

Offline Old Wombat

  • "We'll see when I've finished whether I'm showing off or simply embarrassing myself."
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Re: HMAS(CG) Sea Dragon
« Reply #13 on: June 25, 2019, 02:48:55 PM »
If you're building the Veteran Models 25mm Bushmaster... they are fiddly.

Yep, &, although I haven't started them yet, I've noticed that. :-\
"This is the Captain. We have a little problem with our engine sequence, so we may experience some slight turbulence and, ah, explode."