When scouring through the archives I found this blueprint dated 6-11-1947 for a refit of HMS Venerable; soon to be recommissioned as Hr Ms Karel Doorman. What's interesting is that it was planned with 57 mm mounts for the AA battery. Ultimately the 2 pdr mounts were left in their place and older 40 mm mounts were used untill the angled-deck refit of 1955. Regretfully due to the size of the reference material and the available time I was unable to provide a good photo. So I will provide an illustration of the situation and describe the notable changes.
Portside fore:
The foremost platform of 2 twin and 1 single Oerlikon were to be replaced with 2 single 40 mm guns.
The second platform of 1 quad 2-pdr was to be replaced with 1 twin 57 mm mount.
The third platform with the pompom director would be replaced with a director for the 40 mm mounts.
The fourth paired platform would drop the fore single Oerlikon and replace the aft twin Oerlikon with a director for the 57 mm
The foremost platform of 2 twin and 1 single Oerlikon were to be replaced with 2 single 40 mm guns.
The second platform of 1 quad 2-pdr was to be replaced with 1 twin 57 mm mount.
The third platform with the pompom director would be replaced with a director for the 40 mm mounts.
The fourth paired platform would drop the fore single Oerlikon and replace the aft twin Oerlikon with a director for the 57 mm
Starboard fore:
First 3 are same as the portside
The foremost platform of 2 twin and 1 single Oerlikon were to be replaced with 2 single 40 mm guns.
The second platform of 1 quad 2-pdr was to be replaced with 1 twin 57 mm mount.
The third platform with the pompom director would be replaced with a director for the 40 mm mounts.
The 1 quad 2-pdr on the deck was to be replaced with a director
First 3 are same as the portside
The foremost platform of 2 twin and 1 single Oerlikon were to be replaced with 2 single 40 mm guns.
The second platform of 1 quad 2-pdr was to be replaced with 1 twin 57 mm mount.
The third platform with the pompom director would be replaced with a director for the 40 mm mounts.
The 1 quad 2-pdr on the deck was to be replaced with a director
Portside aft:
The aftmost platform of 2 twin and 1 single Oerlikon were to be replaced with 2 single 40 mm guns and director.
The second platform of 1 quad 2-pdr was to be replaced with 1 twin 57 mm mount.
The third platform with the pompom director would be replaced with a battery for saluting shots.
The fourth paired platform would drop the 2 single Oerlikon with a director for the 57 mm.
The fifth platform for 1 twin Oerlikon would be dropped
The aftmost platform of 2 twin and 1 single Oerlikon were to be replaced with 2 single 40 mm guns and director.
The second platform of 1 quad 2-pdr was to be replaced with 1 twin 57 mm mount.
The third platform with the pompom director would be replaced with a battery for saluting shots.
The fourth paired platform would drop the 2 single Oerlikon with a director for the 57 mm.
The fifth platform for 1 twin Oerlikon would be dropped
Starboard aft:
The aftmost platform of 3 twin and Oerlikon were to be replaced with 2 single 40 mm guns and director.
The second platform of 1 quad 2-pdr was to be replaced with 1 twin 57 mm mount.
The third platform with the pompom director would be replaced with a battery for saluting shots.
The fourth paired platform would drop the 2 single Oerlikon with a director for the 57 mm.
The aftmost platform of 3 twin and Oerlikon were to be replaced with 2 single 40 mm guns and director.
The second platform of 1 quad 2-pdr was to be replaced with 1 twin 57 mm mount.
The third platform with the pompom director would be replaced with a battery for saluting shots.
The fourth paired platform would drop the 2 single Oerlikon with a director for the 57 mm.
Superstructure:
The front pompom director was to be replaced with a V.I. (flight interception) antenna; further up the mast would be placed a 3 cm D.A. II (target indicator) radar; 3 cm Z.W. (sea warning) radar; 10 cm D.A. I (target indicator) radar; a L.W. 1 and 2 (air warning) radar and a beacon.
Aft the funnel would be a D.L. antenna and a second V.I. antenna to replace the pompom director. The previous quad 2-pdr would be replaced with an L.V. (air defence?) deck. Though the side view portrays mastwork and a 40 mm gun.
The front pompom director was to be replaced with a V.I. (flight interception) antenna; further up the mast would be placed a 3 cm D.A. II (target indicator) radar; 3 cm Z.W. (sea warning) radar; 10 cm D.A. I (target indicator) radar; a L.W. 1 and 2 (air warning) radar and a beacon.
Aft the funnel would be a D.L. antenna and a second V.I. antenna to replace the pompom director. The previous quad 2-pdr would be replaced with an L.V. (air defence?) deck. Though the side view portrays mastwork and a 40 mm gun.
Source:
Nationaal Archief, Den Haag, Ministerie van Defensie: Directie Materieel Koninklijke Marine, nummer toegang 2.13.166, inventarisnummer 4024 Tekening behorend bij inv.nr. 3168
Nationaal Archief, Den Haag, Ministerie van Defensie: Directie Materieel Koninklijke Marine, nummer toegang 2.13.166, inventarisnummer 4024 Tekening behorend bij inv.nr. 3168
Source for radar acronyms:
Nationaal Archief, Den Haag, Ministerie van Marine, sinds 1959 van Defensie (Marine), nummer toegang 2.12.56, inventarisnummer 6568 Vaststelling en intrekking van de cz 1945 betreffende het Indelen in klassen van Nederlandse radartoestellen.
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