Reconstruction/repair rules

[P3D]

Naval units IIRC were getting an overhaul every 10 years.

[swamphen]

And I did some checking up and it seems the average legislated life-expetancy of a capital ship of the time was 20 years.

So perhaps a minimum-for-effectiveness of:

10 years, 15%
20 years, 25%
30 years, 50%
40 years, 25%
50 years, 50%

[Desertfox]

For repairs how about this:

Repairs in port can use port BPs, however money to the tune of $0.5 per 1BP must be payed, repairs above that require BP for the general fund.

For example, take a 15,000t BB with 50% damage in a Type 3 Port. The port can provide 6,000t, leaving 1,500t to be take from the general fund. So to repair this ship would require $3 (for port provided BP) plus 1,500t from the general fund.

Repairs can be conducted at twice the regular rate (2BP per month) at twice the cost ($1 per BP)

[Carthaginian]

And I did some checking up and it seems the average legislated life-expetancy of a capital ship of the time was 20 years.

So perhaps a minimum-for-effectiveness of:

10 years, 15%
20 years, 25%
30 years, 50%
40 years, 25%
50 years, 50%

To simplify, why not just say that it's 1% per year, required every 10 years?

[swamphen]

To simplify, why not just say that it's 1% per year, required every 10 years?

Well that is easy but it doesn't reflect that older ships need more work (and, to a lesser extent, vice versa). But a 'graduated' system has the fly in the ointment of somehow accounting for 'early' or 'more extensive than required' work. :-\

Sooooo...perhaps:
0.5% per year for ships under age 10 (refit at 10 years = 5%)
1.5% per year for ships 11-20  (refit at 20 years = 15%)
2.5% per year for ships 21-30 (refit at 30 years = 25%)
2.5% per year for ships 31-40 (refit at 40 years = 25%)
5% per year for ships 41-50 (refit at 50 years = 50%)
5% per year for all ships over age 50.

...which in the event of an 'early' or 'extra cost' refit allows a calculation for the cost of the next refit, with numbers in-between the refit levels rounded up?

***

And a few tweaks to the refit levels:

N: No special infrastructure needed
T: Can be done by a tender
P: Must be done in a port
D: Requires drydocking

Level 1: Basic Refit (Cost = 2.5%)

Cosmetic modifications:
-Changes (number/quantity/type/location) to searchlights: N
-Changes to ship's boats: N
-Cosmetic or temporary changes to superstructure (ie, a fake funnel): N
Armament modifications:
-Alterations to/replacement of guns of 65mm and smaller: N

Level 2: Minor Refit (cost = 5%)

Cosmetic modifications:
-Minor changes to superstructure (enclosing a bridge, adding a searchlight platform): T
Equipment modifications:
-Installation/replacement of radar: P
Armament modifications:
-Changes to depth charge racks and throwers: T
-Changes to external torpedo carriages: T
-Reboring of existing guns of 65mm and smaller: P
-Rechambering of existing guns of 195mm or smaller: P

Level 3: Major Refit (cost = 15%)

Equipment modifications:
-Installation/replacement of fire control/directors: P
Armament modifications:
-Reboring of existing guns larger than 66mm: P
-Rechambering of existing guns larger than 196mm: P
-Other alterations to/replacement of guns of 66mm-195mm not involving barbette replacement: P
-Changes to internal torpedo tubes: D
Structural modifications:
-Replacement of superstructure: P
-Changes to deck mount or turret armor: P
-Changes to conning tower armor: P
-Addition of <25mm/1" deck armor: P
-Refurbishment of internal fittings for life-extension purposes: P
-Adding 'Oil Injection' to coal-fired boilers (10% oil bunkerage): P
-Replacing Boilers OR Engines with similar but upgraded types: D
-Change to trim of ship: D
-Addition of bulges without torpedo bulkhead armour: D

Level 4: Partial Reconstruction (Rebuild) (cost = 25%)

Equipment modifications:
-Installation/replacement of ASDIC (sonar): D
Armament modifications:
-Alterations to guns of 66mm-195mm involving barbette replacement: P
-Alterations to guns 196mm and larger not involving barbette replacement: P
Structural modifications:
-Replacing coal-fired boilers with oil-fired boilers (requires new engines of similar types): P
-Addition of >25mm/1" deck armor: P
-Changes to extent or removal of deck armor: P
-Changes to external armor belts: P (upper), D (ends, main)
-Replacement of secondary barbettes with powerplant machinery: D
-Addition of bulges with torpedo bulkhead armour: D

Level 5: Major Reconstruction (cost = 50%)

Armament modifications:
-Alterations to guns 196mm and larger involving barbette alterations: D
Structural modifications:
-Changes to internal belt armor: P (upper), D (ends, main)
-Powerplant modifications, replacement of VTE engine with turbines: D
-Replacement of main barbette with powerplant machinery: D
-Change to bow form: D
-Other changes to torpedo bulkheads: D

Level 6: Total Reconstruction (cost = 75%)
-Insertion or removal of section of hull amidships: D
-Reshaping of stern: D

[swamphen]

Upon further thought and a bit of fiddling, this:

0.5% per year for ships under age 10 (refit at 10 years = 5%)
1.5% per year for ships 11-20  (refit at 20 years = 15%)
2.5% per year for ships 21-30 (refit at 30 years = 25%)
2.5% per year for ships 31-40 (refit at 40 years = 25%)
5% per year for ships 41-50 (refit at 50 years = 50%)
5% per year for all ships over age 50.

...which in the event of an 'early' or 'extra cost' refit allows a calculation for the cost of the next refit, with numbers in-between the refit levels rounded up?

...is probably too complicated. So perhaps instead:

Ships <10 years of age: 5% refit at 10 years after completion
Ships 11-30 years of age: 15% refits every 10 years
Ships >31 years of age: 25% refits every 10 years

...i.e. assuming no intermediate refits, a ship would receive a 5% refit at age 10, 15% at 20 and 30, and 25% every ten years thereafter. However a ship given a 25% refit at age 8, would next be due for a 15% refit at 18.

[Carthaginian]

I like... great idea!
I vote for changing it as soon as war's end makes it possible.
Of course, I don't have a vote. ;) But if I did, that would be my answer.

[P3D]

Some simplification...

Refit would cost only money (No BP), 15%, every 10 years and takes a 6-12 months. This covers all modifications to keep a ship up-to-date. But in needs a drydock to check the hull and repair accumulated underwater damage.
And engines must be replaced every 30 years.
Installing new major stuff that does not require moving bulkheads could be done at no extra coast at refit/repair, but must be paid separately (new turrets, new engines, new armor etc).
For anything more complex: ?

Repair: The ship cost in %. If damage is severe, the needed BP will be specified by the moderators.

[swamphen]

I could get behind that...  ;)

[Desertfox]

I like it. For repair damages we could use the Port provided BPs?

[miketr]

I like it. For repair damages we could use the Port provided BPs?

What port provided BP's? All I see for ports and BP's is ports now have a BP cost to build.

Michael

[Desertfox]

The amount of automatically repaired tonnage seen over 6 months, for military ports

type 0 500 tons
type 1 2000 tons
type 2 4000 tons
type 3 6000 tons
Type 4 10000 tons
Type 5 16000 tons

[miketr]

OK...  I didn't notice that before....  *Checks V0.1 and V0.4 version of rules, not there so I am not turning senile* Dumb question how do you use these repair tons in the current game?

Michael

[P3D]

For repairing damages you will be able to use your 6-monthly BP budget.

[miketr]

For repairing damages you will be able to use your 6-monthly BP budget.

I am confused by that statement.  When doing repair at a port I assumed you had your countries base BP production to use and thats it.  The ports had the housed the drydocks and building slips but didn't do more than that.  But there is the auto repair tonnage.  Does it work just like BP's for repair?  Is there any limit to there use?  They seam over powered if they replace BP production directly even if only for repair.

Michael