DESTROYERS (DD) p 721
Jane's Major Warships 1997
LÜTJENS (CHARLES F ADAMS)
General Specifications
Country of origin: USA
Operator: Germany
Type: Modified Charles F Adams (SCB-103B)
Class: LÜTJENS
Purchased: 3
Active: 3
Displacement:
standard: 3,370 t
full load: 4,500 t
Dimensions
Length: 133.2 m (437 ft)
Beam: 14.3 m (47 ft)
Draught: 6.1 m (20 ft)
Speed: 32 kts
Range: 4,500 n miles at 20 kts
Complement: 337 (19 officers)
SHIPS
LÜTJENS (D 185)
Builder Bath Iron Works, Bath, Maine, USA
Laid down 1 Mar 1966
Launched 11 Aug 1967
Commissioned 22 Mar 1969
MÖLDERS (D 186)
Builder Bath Iron Works, Bath, Maine, USA
Laid down 12 Apr 1966
Launched 13 Apr 1968
Commissioned 20 Sep 1969
ROMMEL (D 187)
Builder Bath Iron Works, Bath, Maine, USA
Laid down 22 Aug 1967
Launched 1 Feb 1969
Commissioned 2 May 1970
WEAPONS SYSTEMS
SURFACE-TO-SURFACE MISSILES (SSM)
McDonnell Douglas UGM-84B Harpoon
Harpoon anti-ship missiles are carried in the after magazine and launched from the Mk 13 launcher,
both of which they share with the Standard SM-1MR SAMs. A total of 40 missiles is carried. The
Harpoon missiles are either Block 1B or Block 1C versions, the latter having a similar performance to
the Block 1B but with certain additional options, one of which is to fly at a relatively high altitude for
the first part of its path to avoid friendly ships or intervening low landmasses. A second option is to
approach the target indirectly, using up to three preselected waypoints, where course can be changed at
angles greater than 15º. Block 1C missiles can also use selectable seeker search expansion patterns and,
for the terminal phase, have the alternatives of a sea-skimming approach or a low-apogee `pop-up'
trajectory.
Specifications
(Block 1C)
Length:
with booster: 4.63 m (15.19 ft)
without booster: 3.84 m (12.59 ft)
Diameter: 34 cm (1.12 ft)
Wing span: 83 cm (2.72 ft)
Weight:
with booster: 681.9 kg (1,503 lb)
without booster: 519.3 kg (1,145 lb)
Max speed: Mach 0.85
Range: 67 n miles (124 km)
Propulsion: Teledyne CAE J402-CA-4000 single-spool turbojet; 2.92 kN st
Booster: Thiokol or Aerojet rocket; 5,400 kg thrust for about 2.9 s
Warhead: 221.6 kg (488.5 lb) semi-armour-piercing
Fuze: Contact delay
Guidance: Inertial and active radar
Manufacturers/Contractors
McDonnell Douglas Aerospace St Louis, Missouri, USA (prime and missile).
US Naval Weapons Center
China Lake, California, USA (warhead).
Thiokol
Elkton, Maryland, USA (booster).
SURFACE-TO-AIR MISSILES (SAM)
Standard Missile-1 Medium Range (SM-1MR)
Main air defence armament is the SM-1MR which is launched from the Mk 13 Mod 0 launcher on the
quarterdeck. The below deck magazine holds 40 missiles, but this number also includes Harpoon SSMs
(see above). When the target is detected the data is evaluated by the ship's command system and the
target is designated for the missile fire-control system, which then tracks and illuminates it. Each
SPG-51C tracker/illuminator radar usually controls one missile. Once the missile is launched, the
tracker's main illumination beam holds the target while the rear reference illuminator beam provides
guidance data through the missile's rear reference antenna. This guides the missile until the onboard
seeker detects the CW reflected energy from the main illuminator beam. The onboard guidance system
then brings the missile to an interception course. SM-1MR Block IV missiles have a Naval Weapon
Center Mk 51 expanding rod warhead, while Block V missiles have a Naval Weapon Center Mk 90
blast fragmentation warhead.
Specifications
Length: 4.48 m (14.7 ft)
Diameter: 34.3 cm (13.50 in)
Wing span: 1.06 m (3.48 ft)
Weight: 642.3 kg (1,416 lb)
Speed: Mach 2
Range: 20.5 n miles (38 km)
Altitude: 19,800 m (65,000 ft)
Manufacturers/Contractors
Hughes Missile Systems
Tucson, Arizona, USA.
Raytheon
Missile Systems Division, Bedford, Maryland, USA.
RIM-116A RAM close in system
There are two Mk 49 launchers for the Rolling-Airframe Missile (RAM); one launcher is immediately
before the bridge screen, the other right aft. RAM is a lightweight, close in, quick reaction, anti-missile
defence system. The RIM-116 missile is based on the Sidewinder air-to-air missile, but with significant
modifications, enabling it to be used as a fire-and-forget system. There is an infra-red, terminal
guidance seeker in the nose (taken from the Stinger manportable surface-to-air missile), behind which is
a new dual-mode passive radio frequency seeker for mid-course guidance. Most of the rear of the
missile is based upon Sidewinder components.
Missiles are stored in sealed launcher containers, which are manually loaded into the 21-cell Mk 49
RAM Standard Launchers. These launchers are mounted on the same base as that used by the Phalanx
and retain that system's elevation and train drive assemblies.
Radar and electro-optical sensors provide details of target location, distance and speed, while the
ship's ESM system inputs data on the target's radar frequency, as well as correlating radar data on
location. On launch, the missile is spun-up by a rifling band as it is driven down the launch tube, and
then as it leaves the launcher the four tail fins deploy which maintains the spin. Aerodynamic control is
provided by the two canard surfaces, which also deploy after launch. The autopilot and control system
maintain the initial line-of-sight course towards the target and then the RF seeker is activated and once
this acquires the target it takes control of the guidance system and makes the appropriate course
alterations. The IR seeker is also activated and when a sufficient signal-to-noise ratio is achieved this
takes over guidance control for the terminal phase. The missile is capable of manoeuvres up to 20 g in
any direction.
Specifications
Mk 49 RAM Standard launcher
Traverse: 360º
Elevation: u25 to +80º
Turning circle: 3.27 m
RIM-116 missile
Length: 2.79 m (9.15 ft)
Diameter: 12.7 cm (5 in)
Wing span: 43.4 cm (17 in)
Weight: 73.6 kg (162.26 lb)
Speed: Mach 2
Range: 5.17 n miles (9.6 km)
Warhead: 9.09 kg (20 lb) fragmentation blast WDU-17B
Motor: Hercules/Aerojet Mk 36 solid propellant rocket
Manufacturers/Contractors
Hughes Missile Systems
Tucson, Arizon, USA.
RAM Systems GmbH; Europe.
ANTI-SUBMARINE MISSILES
Honeywell RUR-5A ASROC
There is a single Mk 112 launcher in the waist, between the two macks. ASROC consists of a Mk 46
torpedo with strap-on aerodynamic surfaces and a rocket motor to enable it to fly to within range of its
submarine target. Attached to the rear end of the torpedo is a short airframe assembly of clam-like
construction, held together by a steel band, with a Naval Propulsion Plant solid propellant booster and
four trapezoidal aerodynamic surfaces to provide stability in flight. The torpedo has a dome-shaped
frangible plastic nose cap to protect the transducer as it enters the water. Payload is an Alliant Mk 46
Mod 5 torpedo, which has a seeker designed specifically to detect most types of target, including
submarines with anechoically coated hulls, and has an estimated acquisition range of 460 m (1,500 ft).
When a submarine target is detected it is tracked and the attack console's fire-control computer
predicts the target's position. The launcher is turned in the appropriate direction and elevated to an angle
appropriate to the range. The fire-control computer then orders the launch and the booster burns for a
programmed time of between 1 and 4 seconds, by which time the missile will have reached a height of
between 60 and 305 m (200/1,000 ft), although the aerodynamically stable airframe enables it to coast
up to 600 m (2,000 ft). On reaching the programmed position, an explosive bolt cuts the steel band
holding the airframe assembly sections together and, as they separate, the parachute deploys to retard
the torpedo's fall, water entry taking place some 14 to 50 seconds after launch. As the torpedo enters the
water the frangible nose cap breaks off and the torpedo begins its search for the target using a
predetermined pattern.
Specifications
ASROC missile
Length: 4.6 m (15.1 ft)
Diameter: 32.5 cm (12.8 in)
Span: 84.5 cm (33.3 in)
Weight: 435 kg (959 lb)
Range: 0.86-5.39 n miles (1.6-10 km)
Speed: Mach 0.9
Mk 46 Mod 5 torpedo
Diameter: 324 mm (12.75 in)
Length: 2.95 m (9.68 ft)
Weight: 230 kg (507 lb)
Speed: 40 kts (max)
Homing: Active/passive acoustic homing head
Motor: 5-cylinder liquid mono-propellant (Otto) motor
Warhead: Mk 103 Mod 1; 44 kg (97 lb); PBXN-103
Manufacturer/Contractor
Honeywell Training and Control Systems
West Covina, California.
TORPEDOES
324 mm Mk 32 triple torpedo launchers
Two triple Mk 32 324 mm torpedo launchers are mounted forward, one either side of the bridge.
Mk 46 Mod 2 torpedo
Armament is the Honeywell Mk 46 Mod 2 anti-submarine torpedo.
Specifications
(Mk 46 Mod 2)
Diameter: 324 mm (12.75 in)
Length: 2.95 m (9.68 ft)
Weight:
torpedo: 230 kg (507 lb)
warhead: 44 kg (97 lb)
Speed: 40 kts (max)
Range: 5.9 n miles (11 km)
Homing: Active/passive acoustic homing head
Motor: 5-cylinder liquid mono-propellant (Otto) motor
Warhead: Mk 103 Mod 1; 44 kg; PBXN-103
GUNS
United Defense Mk 42 Mod 10 Single 127 mm (5 in)/54 gun mounting
There are two Mk 42 mountings, each housing a single Mk 18 127 mm/54 gun; one is located on the
foredeck, the other atop the deckhouse aft. The Mk 18 gun has a two-piece barrel with replaceable liner
and a service life of some 2,000 rounds. A bayonet-type joint attaches the gun to the housing which
includes a vertical sliding breech block and the entire gun assembly is supported on rollers in the slide.
A separate rammer is mounted on the slide.
The Mk 42 mounting was introduced in 1953 and the upper part of the mounting is fully
power-driven and is enclosed in an armoured shield. The Mk 42 mounting requires a crew of 12: four
men within the shield, and eight in the magazine and ammunition handling system.
Ammunition is loaded by a dual system with projectiles supplied automatically to the slide alternately
from the right and left. The loading system consists of two manually loaded drums, one with 20
projectiles and the other with 20 charges, which rotate to bring the projectile and cartridge together.
Complete rounds are lifted from the lower hoist to the upper hoist and from there to the cradles which
move them to the tray from where they are rammed into the breech.
Magazine capacity is 550 rounds and ammunition includes the Mk 41 AAC/HC, Mk 42 common, and
Mk 48 illumination rounds, all of which weigh 31.75 kg. All rounds have point detonating, proximity or
mechanical time fuzes.
Specifications
Gun, 127 mm/54 Mk 18
Calibre: 127 mm (5 in)
Length of barrel: 54 calibres
Muzzle velocity:
new barrel: 807 m/s (2,650 ft/s)
mid-life: 792 m/s (2,500 ft/s)
Max range: 13 n miles (24 km)
Max altitude: 14,400 m (47,000 ft)
Ammunition: 31.75 kg
Mounting, Mk 42 Mod 10
Traverse: 360º at 40º/s
Elevation: u15 to +85º at 25º/s
Rate of fire: 20-40 rds/min
Manufacturer/Contractor
United Defense Armament Systems Division
Minneapolis, Minnesota, USA.
DEPTH CHARGES
There is one depth charge projector, but the type of weapon used is not known.
ELECTRONIC WARFARE SYSTEMS
ELECTRONIC SUPPORT MEASURES/ELECTRONIC COUNTERMEASURES (ESM/ECM)
FL-1800S Stage II ECM/ESM suite
The FL-1800S Stage II, now installed in all three ships, is based on the FL-1800S, but with considerable
improvements in the areas of signal processing, analysis, MMIC and ECM. There is a new channelised
receiver with nine sub-bands, which provides extremely accurate frequency measurement and CW
resistance. Two fully integrated superheterodyne receivers have been incorporated for special analysis
of pulses and for later upgrade to fit in a Fingerprinting System. The system remains wide open to
receive other threats. Expanded capacity threat libraries are provided with onboard reprogrammable
modules for use in out-of-area missions.
Specifications
(ESM)
Frequency range: 2-18 GHz
Azimuth coverage: 360º
Elevation coverage: u10 to +60º
Polarisation: 45º linear for receiving channel; circular for DF
DF accuracy: 5º typical RMS
Manufacturer/Contractor
Daimler-Benz Aerospace AG
Sensor Systems Division, Ulm, Germany.
DECOYS
Loral Hycor SRBOC Mk 36 6-barrelled Chaff Launcher
There are two Mk 36 SRBOC (Super Rapid Bloom Offboard Countermeasures) units.
Specifications
Launcher
Dimensions: 160 × 43 × 86 cm (63 × 17 × 34 in)
Weight: 173 kg (381.4 lb)
Range: 2.2 n miles (4 km)
Rounds
Diameter: 130 mm (5.1 in)
Length, weight:
Mk 182: 1,209 mm; 22.7 kg
Super Chaffstar: 1,209 mm; 20.9 kg
Super Gemini: 451 mm; 5.5 kg
Super Hiram III: 1,220 mm; 13.6 kg
Super Hiram IV: 467 mm; 3.8 kg
Super Loroc: 734 mm; 13.2 kg
Manufacturers/Contractors
Loral Hycor Inc
Woburn, Maryland, USA.
Tracor Aerospace Inc (SCIP)
Austin, Texas, USA.
COMMAND AND CONTROL SYSTEMS
COMBAT DATA SYSTEMS
SATIR Z103B tactical data handling system
SATIR (System zur Auswertung Taktischer Informationen auf Raketenzerstoerren) is a command and
weapon control system (Führungs und Waffeneinsatzsystem (FüWes)). The hardware and software have
been integrated by the Bundesamt für Wehrtechnik und Beschaffung (BWB) and the Kommando Marine
Führungssystems (KdoMFüSys) and then interfaced with sensor and weapon systems. The original
system was SATIR Z103 which was fitted in the three `Lütjens' class ships and entered service in March
1969, but in the early 1980s these systems were upgraded to SATIR Z103B standard to achieve
commonality with the systems then being installed in the F122 frigates. The first Z 103B system entered
service in March 1984 aboard Mölders.
SATIR is a mainframe architecture system using BWB software written in the CMS-2Y language, the
SATIR Z103B version being based on a dual-bay 32-bit AN/UYK-7 with a 256 k memory and an
operating speed of 667 Kops. The system is designed to acquire data from a variety of sensors, and to
process and display it to ensure effective engagement of airborne, surface and subsurface targets. A
modular software structure was adopted and four packages were produced for operations, maintenance,
support and administration. Radar video data is transmitted both directly to the display consoles and, via
the video extractor, to the central computer and there is partial integration of the IFF system.
SATIR Z103B uses the Hughes AN/UYA-4 display system family and has 11 OJ-7879 consoles for
general sensor data display, two OJ-194 consoles for use with the AN/SYS-1(V)1 data fusion system
and one for the FL-1800S Stage II ECM system, as well as an IP-1117 range-height indicator console.
Manufacturers/Contractors
BWB (prime).
Unisys (subcontractor 1).
Atlas Elektronik (subcontractor 2).
COMMUNICATIONS AND DATALINKS
Link 11
Satcom
Tacan: URN 20.
WEAPONS CONTROL
Gun Fire Control System (GFCS) Mk 86 Mod 8
The GFCS Mk 86 replaced the GFCS Mk 68 during the German ships' modernisation programme.
GFCS Mk 86 controls direct and indirect naval gun fire support and also assists in the engagement of
both surface and air targets. It has a mainframe architecture using CMS-2 software language and
consists of a computer system, a display system and three sensors, and accepts data from ACDS, the Mk
74 fire-control system and optical Target Designation Transmitters. The Mk 86 Mod 8 system installed
in the 'Lütjens' class is configured to control the two 127 mm guns for defence against surface and air
targets, and for shore bombardment. It uses two AN/UYK-7 32-bit computers, each with a memory of
256,000 words and an operating speed of 667,000 operations per second. The system can track 120
targets simultaneously.
Targets acquired by the ship's search radars, missile fire-control radars and EW system are evaluated
by the Combat Information Center (CIC) which designates them to the Mk 86 Combat Operations
Center (COC). They are then assigned to a Weapons Operations Center (WOC) together with a gun or
guns for acquisition and tracking which are monitored by the COC operator. The WOC operator checks
the ballistic solution and commands the loading and firing of the gun or guns.
Several operational modes are available:
Radar Surface Fire. Upon target acquisition, a track-while-scan routine is used to track simultaneously
multiple designated targets. Smoothed radar data with appropriate ballistics data, are used to compute
weapon orders.
Air Action. The computer automatically and adaptively controls search patterns to acquire and track air
targets. Target data, plus a TV view along the SPG-60 boresight axis, are displayed on a weapon control
console. The engagement with SM-2 missiles is facilitated by virtue of continuous wave illumination
injection to the SPG-60 tracking radar. A pre-action calibration of gun weapons can be initiated from
the weapon control consoles.
Anti-Ship Missile Defense (ASMD). The track-while-scan acquisition gate is expanded to a range
sufficient for threat detection. (Full 360º coverage, or coverage over a number of segments to provide
surveillance of selected areas, can be chosen.) All targets passing through the acquisition gate are then
automatically detected by the system. After target detection, the following functions are performed
automatically: threat evaluation; weapon assignment; assignment of targets to tracking channels;
slewing of AA director and a weapon to the target; scan of AA director and 3D track of targets;
initiation of firing; and transfer of fire to second target.
Visual Surface Fire. A future facility will allow the weapon controller to track the target visually with
the TV system and fire the laser to obtain range data. Target range and angle data are entered into the
system automatically, and ballistics are computed.
Indirect Shore Bombardment. For shore fire support missions or engagement of targets that are not
within view of either radar or optical sensors, target and `own ship' co-ordinates are entered at a weapon
control console. The system automatically updates these with inputs from the ship's compass and log, or
by means of a beacon or other navigational aids. Spotting data is entered at the keyboard. Automatic
compensation for orientation of the target line by an on-shore observer is provided.
Manufacturer/Contractor
Lockheed Electronics Company Inc
Nashua, New Hampshire, USA.
Mk 74 Mod 6 missile fire-control system (MFCS)
The Mk 74 acquires, tracks and illuminates targets assigned to it by the weapon direction system. It
operates with a missile handling/launching system but is not involved in the launch sequence, which is
controlled by the Weapon Direction System (WDS). After missile launching the Mk 74 monitors the
weapon and controls it until interception of the target then carries out a post-launch evaluation. The
system consists of a computer system, an AN/SPG-51 G/H-I/J-band radar, a Mk 73 director and
associated consoles. The system uses a Mk 152 Mod 1 computer.
The SPG-51C radar uses a G/H-band pulse Doppler technique for automatic acquisition, tracking and
missile guidance. Radar data readouts are displayed upon a dedicated radar console. The I/J-band CW
illuminator is used as a reference beam in directing missiles and is detected by the missile's reference
antennas as the signal antenna locks on to the energy reflected from the target. By comparing the
target-reflected energy and missile rear reference energy it is possible to home the missile.
The SPG-51C radar has two independent channels each with a G/H-band tracking radar and an
I/J-band illumination transmitter. This radar has longer detection and acquisition ranges than its
predecessor, and automatic target scheduling, which require fewer operator decisions.
The Mk 73 director is a rotating electronic structure which includes the transmitter group, the control
power supply for CW injection, the power supply for the pulse Doppler system, and a radar data
converter. It can traverse up to 360º while elevation limits are u30 to +83º. The associated WDS is the
Mk 14 Mod 5.
Manufacturer/Contractor
Raytheon Company
Equipment Division.
RADARS
Set AN/SPS-40C AN/SPS-52B AN/SPS-10 Two
AN/SPG-51C AN/SPQ-9 AN/SPG-60
Company Lockheed Hughes Raytheon Raytheon Lockheed Lockheed
Role 2D surface
search
3D long-range
Surface
search
Missile fire
Gunfire
control
Missile/gun
fire
air search control (SAM) control
Band E/F E/F G G/I I/J I/J
Range 175 n miles 240 n miles
Can detect a
destroyer
- 20 n miles 60 n miles
(320 km)
50,000 ft
(440 km)
at 15 n
miles
(37 km)
610 m
(110 km)
Beam 11 × 19º 1.1 × 2.25º 1.5 × 16º Track: 1.6º 1.35 × 3º 1.2 × 1.2º
Illum: 0.9º
Peak power 200 kW 1 MW 285 kW Track: 81 kW 1.2 kW 5.5 kW
Illum: 5 kW
Gain 21 dB 39.5 dB 30 dB Track: 39.5 dB 37 dB 41.5 dB
Illum: 45 dB
Pulsewidth 60 µs 4.6/10/2.5 µs 0.25-1.3 µs
Track: 2.1-3.2
µs
0.3-16 µs 0.27/1/6 µs
PRF 300 pps 1,850/925 pps 312-325 pps
Surface: 4.1
kHz
3,000 pps
25,000-35,000
pps
Air: 9.5-16.7
kHz
Scan rate 7.5/15 rpm
7.5/7.5/15
rpm
15 rpm - 60 rpm -
SONAR
STN Atlas Elektronik DSQS-21BZ hull-mounted and variable depth
sonar systems
DSQS-21BZ has a 1 m diameter hull-mounted, medium-frequency transducer array, with 32 preformed
beams. It uses computer-aided detection techniques for classification and tracking and the information is
presented on colour CRT displays to permit Doppler coding and the discrimination of data on the
integrated displays. The sonar system can automatically transmit up to 10 targets directly into SATIR.
(Note: The `Z' in the designation indicates a variant equipped with electronic stabilisation to minimise
the effects of ship's motion)
Manufacturer/Contractor
STN Atlas Elektronik GmbH
Bremen, Germany.
PROPULSION
Specifications
System: Steam turbine
Main machinery: 4 Combustion Engineering boilers; 84.4 kg/cm2 (1,200 psi); 510ºC (950ºF); 2
turbines; 52.2 MW (70,000 hp)
Shafts: 2
FURTHER INFORMATION
PROGRAMME
The German Navy originally planned to order six ships of this class, all of which would have been built
in West German yards. In the event, however, it was decided to reduce the order to three ships, all of
which would be built in the United States, and an inter-government agreement was signed in 1964, with
the order placed in 1965.
DESIGN
As built, the German ships were fitted with weapons, sensors and propulsion systems identical to those
in the late production ships for the US Navy. A number of relatively minor changes were, however,
made to bring the ships in line with German practice, principally by fitting modified stacks, with
sideways projecting exhausts. In addition, the SPS-52 antenna was placed on top of the stack and the
small platform ahead of the stack was used as the base for a rather more substantial mainmast.
MODERNISATION
These three ships have undergone repeated modernisations. In the late 1970s the boilers were modified
to enable them to burn light oil. A major modification programme was undertaken in the mid-1980s,
which included: replacing Tartar SAMs by Standard; installing a single-arm Mk 13 launcher for
Standard SAM and Harpoon SSM; improved fire control with digital in place of analogue computers;
and a raised superstructure abaft the bridge with the SPG 60 and SPQ 9 antennas on a mast platform.
This work was carried out by the Naval Arsenal, Kiel and Howaldtswerke, Kiel, with Mölders
completed on 29 March 1984, Rommel on 26 Jul 1985, and Lütjens on 16 December 1986.
The most recent upgrading has involved fitting the two RAM launchers. This system became
operational in Mölders in December 1993, followed by Lütjens in June 1995 and, finally, Rommel in
July 1996. The electronic warfare suites have also been upgraded in 1995/96.
THE FUTURE
These ships were planned to have a life of at least 30 years, taking them to 1999 (Lütjens and Mölders)
and 2000 (Rommel). However, there have been recent problems with the boilers, which, coupled with
budgetary cuts, may lead to earlier retirement. The successor is the Sachsen (F 124) class.
The Mk 74 MFCS controls the Standard SM-1MR in flight, using the SPG-51 radar,
Mk 73 director and a Mk 152 Mod 1 computer (Raytheon)
Lütjens (Ian Sturton) 1 Depth Charge projector 2 Mk 49 RAM 21-cell launcher 3
Mk 13 Mod 0 launcher for standard SM-1MR and Harpoon (total 40 missiles) 4
Mk 42 Mod 10 127 mm (5 in) single gun mounting 5 Raytheon SPG-51 fire
directors for Standard SM-1MR 6 Hughes SPS-52 3D air search radar 7
Communications frequencies direction-finding loop 8 Mk 112 ASROC launcher
9 URN-20 TACAN 10 Raytheon SPS-10 (surface search) 11 Lockheed SPS-40
radar (air search) 12 AEG FL-1800S - DF antennas 13 Kelvin Hughes
navigation radar 14 Lockheed SP2-9 fire-control radar (127 mm guns) 15
Lockheed SPG-60 fire control (missile/gun) 16 Mk 32 324 mm torpedo
launchers (two triple sets)
Lütjens (D 185) visiting Scotland in 1996 (Jane's/H M Steele)
Lütjens (D 185). Note the RAM launcher on the quarterdeck and the Mk 13
launcher on top of its drum-shaped magazine, which is normally below deck
level (H & L van Ginderen Collection)
Lütjens is one of three `Charles F Adams' class destroyers serving in the
German Navy (H & L van Ginderen Collection)
Lütjens (D 185). The circular disk at the mast-head is URN-25 TACAN and on the platform
below it is the SPS-10 surface search radar. The small cylinder with a pointed top is the
omni-directional antenna element of the FL-1800S ESM/ECM suite. The large antenna is the
SPS-40 air search radar and below that are four rectangular antennas, one in each quadrant,
which are the DF antenna system of FL-1800S. The large football radome covers the SPQ-9
fire-control radar, in front of which is the SPG-60 fire-control radar for the RAM missile
system. The satellite communication antenna on the bridge roof is for INMARSAT, while the
small rectangular antenna halfway up the rear strut of the foremast (directly below the
forward exhaust) is the jammer element of FS-1800S
Test firing a RAM missile at sea (Jane's Naval Weapons Systems)
