Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!apple!veritas!amdcad!amdcad!military
From: hon@scs.carleton.ca (Edmund Hon)
Newsgroups: sci.military
Subject: Re: Definitions of naval vessel types?
Message-ID: <1991May7.062402.12540@amd.com>
Date: 4 May 91 03:30:46 GMT
References: <1991May1.030202.19737@amd.com> <1991May2.040310.20425@amd.com> <1991May3.063357.5484@amd.com>
Sender: military@amd.com
Organization: School of Computer Science, Carleton University, Ottawa, Canada
Lines: 59
Approved: military@amd.com


From: hon@scs.carleton.ca (Edmund Hon)


In the midst of this great discussion of distinguishing frigates and 
destroyers, allow me to drop a little note here.

In the Royal Navy, it is always (OK, at least in the post WW2 era)
frigates for ASW duties, and destroyers for fleet air defence. Size
is never a factor in deciding which ship is a DDG or a FF.

example:
Type 42 Destroyer

Displacement (tons): 3500 standard; 4100 full
Dimensions (feet): length: 392 (waterline)
			   412 (overall)
		   width:  47
Armament: Sea Dart SAM (Also has a limited capability as SSM)
	  1 x 4.5" Mk8 cannon
	  2 x 20mm Oerlikon
	  2 x triple mount AS torpedo launchers
	  Lynx Mk 2 helicopter.

Note i) Data for Batch 1 and Batch 2 ships
     ii) This class used to be called the "Sheffield" class, but
	 since HMS Sheffield was sunk during the Falklands, it
	 has always been just "Type 42". HMS Sheffield now re-
	 borned as a Type 22 (Batch 2) frigate.

Type 22 Frigate ("Broadsword" class)

Displacement (tons): 3500 standard; 4400 full (Batch 1)
		     4100 standard; 4800 full (Batch 2)
		     4200 standard; 4900 full (Batch 3)
Dimensions (feet): Batch 1:
		   Length: 410 (waterline)
			   430 (overall)
		   width: 48.5
		   Batch 2 & 3:
		   Length: 485.8 (overall)
		   width: 48.5 
armament: SSM: 4 x Exocet (Batch 1 & 2)
	       8 x Harpoon (Batch 3)
	  2 x 6 barrel Sea Wolf SAM
	  2 x triple AS torpedo launcher
	  Guns: 1 x 4.5" Mk 8 (Batch 3)
		1 x Goalkeeper CIWS (Batch 3)
		4 x twin 30mm (Batch 3)
		2 x 20mm; 2x 40mm (Batch 1, 2)
		Lynx helicopter.
Note: The Sea Wolf only has a range of 3 nm, and is usually
      regarded as a point difense missle. 

Jane's NATO Warships Handbook
"Harpoon" - Modern Naval Wargame Rules

-- 
hon@hans.scs.carleton.ca