Well, let’s take a look at how the rules can be applied currently and under the new proposal. Personally, I think the timelines wind up all over the board in terms of reasonableness.
Consider 4 vessels :
Gruno Class gunboat – 1930 - 499t
Z45 Class destroyer – 1925 – 1,951t
Friesland Class heavy cruiser – 1923 - 12,482t
DeRutyer class BB as well --1919 – 30,397
2.2.2.1 Level 1: Manual Refits (Cost = 5%)
Say swapping out the 40mm AA for 40mm AA with new sites and replacing the single 13.2mm AA mounts with 23mm AA.
Gruno Class gunboat – old : 7d New : 3d
Z45 Class destroyer – old : 16d New : 8d
Friesland Class heavy cruiser – old : 32d New : 16d
DeRutyer Class battleship – old : 59d New : 30d
2.2.2.2 Level 2: Minor Refits (cost = 15%, except for ships of 2,999 t light or less --> 5%)
Here we are updating fire control
-Changes to radar: P
-Changes to gun directors: T
-Minor changes to superstructure (i.e. enclosing a bridge, adding a searchlight platform): T
Gruno Class gunboat – old : 7d New : 3d
Z45 Class destroyer – old : 16d New : 8d
Friesland Class heavy cruiser – old : 97d New : 48d
DeRutyer Class battleship – old : 177d New : 89d
2.2.2.3 Level 3: Major Refits (cost = 25%, except ships of 2,999 t light or less --> 15%)
For the Gruno replacing the 125mm guns with new models :
-Alterations to guns of 66mm-195mm not involving barbette alterations: P
-Changes to external armor belts: P (upper), D (ends, main)
-Changes to deck mount or turret armor: P
-Changes to conning tower armor: P
Gruno Class gunboat – old : 21d New : 11d
For the Z45 upgrading the hydrophones to a sonar suite :
-Changes to sonar: D
Z45 Class destroyer – old : 49d New : 25d
For the Friesland adding a deckhouse with enclosed sauna,
Aka -Changes to superstructure (i.e. lengthening or widening a deck, adding a deck house): P
Friesland Class heavy cruiser – old : 161d New : 97d
OR
For the Friesland
-Refurbishment of internal fittings for life-extension purposes: P
-Changes to deck mount or turret armor: P
-Changes to conning tower armor: P
-Changes to external armor belts: P (upper), D (ends, main)
Friesland Class heavy cruiser – old : 161d New : 97
DeRutyer Class battleship
Fitting new catapults for the aircraft and constructing a hanger (which doesn’t count as a deck house)
-Changes to catapults and/or above-decks seaplane hangers: P
DeRutyer Class battleship – old : 295 New : 177