The Navy is considering at least four over-the-horizon missile weapons for its Littoral Combat Ship -- Harpoon, Naval Strike Missile, Long-Range Anti-Ship Missile and an Extended Range Griffin Missile.

The Navy plans to deploy two separate long-range over-the-horizon missile weapons aboard its Littoral Combat Ship later this year as part of an effort to better arm the vessel and give it an ability to attack longer-range land and ocean targets than it is currently configured to do, according to industry sources familiar with the ship's development.

The Kongsberg-Raytheon Naval Strike Missile will soon deploy with the flat-bottomed "Freedom" variant LCS and a Harpoon Block IC missile will deploy on the Navy's trimaran "Independence" variant of the ship; the idea is to further assess each weapon in an operational setting as a way to better determine the ideal over-the-horizon weapon for the ship's future.

At the same time, the Navy is also weighing the prospect of arming the LCS with the emerging Long-Range Anti-Ship Missile or a laser-guided Extended Range Griffin Missile.

A formal competition among industry is expected at some point in the future, per Navy statements which indicate that no formal decision regarding which weapon will ultimately be integrated onto the ship has been make.

In September 2015, Director of Surface Warfare Rear Adm. Peter Fanta directed the installation of a technologically mature, over-the-horizon capability across in-service littoral combat ships to support the Navy's distributed lethality concept. Priority was given to Coronado and Freedom as ships preparing to deploy in fiscal year 2016.

Distributed Lethality:

The Navy's distributed lethality strategy involves numerous initiatives to better arm its fleet with offensive and defensive weapons, maintain a technological advantage over adversaries, such as the fast-growing Russian and Chinese navies, and strengthen its "blue water" combat abilities against potential near-peer rivals, among other things.

(This first appeared in Scout Warrior here.)

Arming the Littoral Combat Ship, and its more survivable and lethal variant, the Frigate, is designed to better equip the LCS for shallow and open water combat against a wider range of potential adversaries, such as enemy surface ships, drones, helicopters, small boats and maneuvering attack craft, at beyond-the-horizon ranges.

"The Navy is in the process of researching and defining requirements for a shipboard anti-ship missile. Competition will absolutely factor into any acquisitions strategy to ensure that we fulfill the requirement at the best value to the government," Navy spokeswoman Lt. Kara Yingling told Scout Warrior in an interview.

The LCS is already equipped with 30mm and 57mm guns to destroy closer-in enemy targets such as swarms of small boats and the Navy plans to deploy a maritime variant of the HELLFIRE Missile aboard the ship by next year to destroy approaching enemy targets from "within the horizon"

The development of these LCS-launched over-the-horizon missiles entirely consistent with the Navy’s emerging “distributed lethality” strategy which seeks to better arm the fleet with long-range precision offensive and defensive fire power.

Part of the rationale to move back toward open or “blue water” combat capability against near peer competitors emphasized during the Cold War. While the strategic and tactical capability never disappeared, it was emphasized less during the last 10-plus years of ground wars wherein the Navy focused on counter-terrorism, counter-piracy and things like Visit Board Search and Seizure. These missions are, of course, still important, however the Navy seeks to substantially increases its offensive “lethality” in order to deter or be effective against emerging high-tech adversaries.

Having longer-range or over-the-horizon ship and air-launched weapons is also quite relevant to the “distributed” portion of the strategy which calls for the fleet to have an ability to disperse as needed. Having an ability to spread out and conduct disaggregated operations makes Navy forces less vulnerable to enemy firepower while. At the same time, have long-range precision-strike capability will enable the Navy to hold potential enemies at risk or attack if needed while retaining safer stand-off distance from incoming enemy fire.

Yingling said requirements for a ship-launched weapon of this kind were still being determined.

Harpoon:

Littoral combat ship USS Coronado successfully executed the first live-fire over-the-horizon missile test using a Harpoon Block IC missile, July 19, during the Navy's Rim of the Pacific exercise.

RIMPAC is a biennial multinational exercise that provides a unique training opportunity that fosters sustained cooperative relationships critical to ensuring the safety of sea lanes and security on the world's oceans.

Navy officials told Scout Warrior that part of the rationale for the live-fire Harpoon exercise was to assess the ability of the LCS to withstand a deck-firing of the weapon.

Harpoon is an all-weather, over-the-horizon weapon designed to execute anti-ship missions against a range of surface targets. It can be launched from surface ships, submarines and aircraft and is currently used on 50 U.S. Navy ships: 22 cruisers, 21 Flight I destroyers and seven Flight II destroyers, Navy statements said.

The Boeing-built Harpoon reaches high subsonic speeds and is engineered to reach over-the-horizon ranges of 67 nautical miles, Navy information says. It has a 3-foot wingspan and weighs roughly 1,500 pounds. The air-launched weapon is 12-feet long and the ship and submarine launched Harpoon is 15-feet long; it uses Teledyne Turbojet solid propellant booster for surface and submarine launch, Navy information specifies.

The Harpoon generates 600 pounds of thrust and fires with a sea-skimming mode to better avoid enemy ship radar detection. Its warhead uses both penetration and high-explosive blast technology.

Naval Strike Missile:

The Navy will soon deploy the Naval Strike Missile aboard the Freedom variant of the LCS that can find and destroy enemy ships at distances up to 100 nautical miles, service officials said.

The Naval Strike Missile weapon is developed by a Norwegian-headquartered firm called Kongsberg; it is currently used on Norwegian frigates and missile torpedo boats, company officials said.

“The Navy is currently planning to utilize the Foreign Comparative Testing program to procure and install the Norwegian-built Naval Strike Missile on the USS FREEDOM (LCS 1). The objective is to demonstrate operationally-relevant installation, test, and real-world deployment on an LCS,” a Navy spokeswoman from Naval Sea Systems Command told Scout Warrior.

The deployment of the weapon is the next step in the missiles progress. In 2014NSM was successfully test fired from the flight deck of the USS CORONADO (LCS 4) at the Pt. Mugu Range Facility, California, demonstrating a surface-to-surface weapon capability, the Navy official explained.

First deployed by the Norwegian Navy in 2012, the missile is engineered to identify ships by ship class, Gary Holst, Senior Director for Naval Surface Warfare, Kongsberg, told Scout Warrior in an interview.

The NSM is fired from a deck-mounted launcher. The weapon uses an infrared imaging seeker, identify targets, has a high degree of maneuverability and flies close to the water in “sea-skim” mode to avoid ship defenses, he added.

“It can determine ships in a group of ships by ship class, locating the ship which is its designated target. It will attack only that target,” Holst said.

Holst added that the NSM was designed from the onset to have a maneuverability sufficient to defeat ships with advanced targets; the missile’s rapid radical maneuvers are built into the weapon in order to defeat what’s called “terminal defense systems,” he said.

“One of the distinguishing features of the missile is its ability to avoid terminal defense systems based on a passive signature, low-observable technologies and maneuverability. It was specifically designed to attack heavily defended targets,” Holst said.

For instance, the NSM is engineered to defeat ship defense weapons such as the Close-In-Weapons System, or CIWS – a ship-base defensive fire “area weapon” designed to fire large numbers of projectiles able intercept, hit or destroy approaching enemy fire.

CIWS is intended to defend ships from enemy fire as it approaches closer to its target, which is when the NSM’s rapid maneuverability would help it avoid being hit and proceed to strike its target, Holst added.

Holst added that the weapon is engineered with a “stealthy” configuration to avoid detection from ship detection systems and uses its sea-skimming mode to fly closer to the surface than any other missile in existence.

“It was designed against advanced CIWS systems. It is a subsonic weapon designed to bank to turn. It snaps over when it turns and the seeker stays horizontally stabilized -- so the airframe turns around the seeker so it can zero-in on the seam it is looking at and hit the target,” he said.

Raytheon and Kongsberg signed a teaming agreement to identify ways we can reduce the cost of the missile by leveraging Raytheon’s supplier base and supplier management, Holst explained.

Kongsberg is working with Raytheon to establish NSM production facilities in the U.S., Ron Jenkins, director for precision standoff strike, Raytheon Missile systems, said.

Kongsberg is also working on a NSM follow-on missile engineered with an RF (radio frequency) sensor that can help the weapon find and destroy targets.

The new missile is being built to integrate into the internal weapons bay of Norway’s F-35 Joint Strike Fighter as well.

Kongsberg and Raytheon are submitting the missile for consideration for the Navy’s long-range beyond-the-horizon offensive missile requirement for its LCS.

“The Navy has identified a need for an over-the-horizon missile as part of their distributed lethality concept which is adding more offensive weapons to more ships throughout the fleet and they wanted to do this quickly,” Holst explained.