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Sa'ar 4.5-class missile boat
INS Nirit a.k.a. INS Hetz
Class overview
Name: Sa'ar 4.5
Builders: Israel Shipyards Ltd.
Operators:  Israeli Navy
 Mexican Navy
Preceded by: Sa'ar 4-class missile boat
Succeeded by: Sa'ar 5-class corvette
Subclasses: Aliya (Chochit)
Hetz (Nirit)
Completed: 2 Aliya subclass
8 Hetz subclass
Active: · Aliya subclass: INS Aliya, INS Geula
· Hetz subclass: INS Romach, INS Keshet, INS Hetz, INS Tarshish, INS Kidon, INS Yaffo, INS Herev, and INS Sufa
General characteristics
Class & type: Missile boat
  • 498 tonnes (full load - Aliya subclass)
  • 488 tonnes (full load - Hetz subclass)
  • 430 tonnes (common standard)
Length: 61.7 m (202.43 ft)
Beam: 7.62 m (25.00 ft)
Draft: 2.8 m (9.19 ft)

4 MTU 16V956 TB91 V16 diesel engines[1]

  • 4000 hp (3000KW) each[2]
  • 19 knots (35 km/h) (cruise speed)
  • 33 knots (61 km/h) (top speed - Aliya)
  • 34 knots (63 km/h) (top speed - Hetz)
  • Range:
  • 4,800 nautical miles (8,900 km) at 19 knots (35 km/h)
  • 2,200 nautical miles (4,100 km) at 30 knots (56 km/h)
  • Complement:
  • 53 officers and crewmen
  • Sensors and
    processing systems:
  • Thales Neptune air & surface search radar
  • Selenia Orion fire-control radar (Aliya)
  • Elta EL/M-2221 fire-control radar (Hetz)
  • Electronic warfare
    & decoys:
  • Elbit chaff rocket launchers
  • Elisra NS-9003A/9005 RWR
  • Armament:

    Aliya subclass:

    Hetz subclass:

    Aircraft carried: Eurocopter Panther in Aliya subclass (in ISC)
    Aviation facilities: Helipad and helicopter hangar in Aliya subclass

    Sa'ar 4.5 (Hebrew: סער 4.5‎) is a class of Israeli Sea Corps missile boats designed and built by Israel Shipyards Ltd. as an improved and stretched Sa'ar 4-class missile boat. There are two different subclasses that are both named Sa'ar 4.5. The first subclass was initially called Chochit (Hebrew: חוחית‎), but renamed to Aliya (Hebrew: עליה‎). Two Aliya-subclass boats are in service with the Mexican Navy. The second subclass was initially called Nirit (Hebrew: נירית‎) but renamed to Hetz (Hebrew: חץ‎). Eight Hetz-subclass boats are in service with the Israeli Navy.


    Aliya subclass

    INS Aliya in 1983.

    Ceremony of transferring INS Geula (ARM Tormenta) and INS Aliya (ARM Huracán) from the Israeli Navy to the Navy of Mexico.

    The first two Sa'ar 4.5 boats were Aliya subclass. Two boats of this version were built and launched in 1980, the first one being INS Aliya, followed by INS Geula. Additionally to the anti-ship missiles, these missile boats were equipped with aviation facilities that could accommodate two (1 on a regular basis) Bell 206, MD 500, or HH-65 helicopters. Eurocopter Panther was the last helicopter deployed on these boats in the Israeli navy. The Aliya subclass are the smallest warships with a helipad and helicopter hangar.

    In August 1984, INS Aliya and INS Geula were sent to destroy a terrorist facility in Nahr al-Bared, northern Lebanon. Two MD 500 Defenders from INS Aliya and another two from INS Geula successfully hit the target. In July 1985, INS Aliya and INS Geula carried out a similar mission near Nahr al-Bared.[3]

    In January 2004 both boats were sold to Mexico for service in the Mexican Navy. On August 23, 2004 the boats were relaunched in Mexico renamed ARM Huracán and ARM Tormenta. Press reports indicate that Israel removed the Harpoon missile systems prior to the sale, however, the Gabriel anti-ship missile systems were included in the package.[4]

    Hetz subclass

    INS Romach in front, INS Sufa on the back. 2008.

    Sa'ar 4.5 Hetz-subclass missile boats lack the helicopter facilities of the Aliya subclass, but have more weapon systems fitted. They are largely based on the Sa'ar 4-class missile boat with improvements in electronic systems: command and control, detection, classification and identification, fire control system, radar, sonar, electronic warfare and communications. The engines and propulsion systems were also upgraded. The boat itself is 4 meters longer than the Sa'ar 4-class to accommodate the new systems.

    INS Hetz or one of her sister ships. 2012.

    The original construction plan for Sa'ar 4.5-class missile boats included 2 helicopter-equipped boats (INS Aliya and INS Geula) and three ordinary missile boats: INS Romach (launched and commissioned in 1981), INS Keshet (launched and commissioned in 1982) and INS Nirit. The keel of INS Nirit was laid in 1984 but the construction ceased due to lack of funds and it was finally launched in 1990 and commissioned in 1991 with some modern equipment, eventuality renamed to INS Hetz. Consequently the older INS Romach and INS Keshet were upgraded to match the INS Hetz specifications. INS Kidon, INS Tarshish, and INS Yaffo' commissioned in 1994, 1995, and 1998 respectively. Particularly INS Kidon and INS Yaffo were built comprising various older systems that were disassembled from Sa'ar 4-class missile boats with the same names, atop brand new Sa'ar 4.5-class hulls. INS Tarshish possibly also comprised some weapon systems demounted from the Sa'ar 4-class missile boat with the same name, atop a new Sa'ar 4.5-class hull. Another two further-upgraded Sa'ar 4.5 Hetz-subclass missile boats called INS Herev and INS Sufa were commissioned in 2002 and 2003, raising the number of Sa'ar 4.5 Hetz-subclass missile boats to eight.

    See also


    External links

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