Looks like the U.S. Navy is looking at guided rounds for the 5" guns for moving target anti ship work.
http://news.usni.org/2014/06/03/navy-taking-second-look-five-inch-guided-round
The RFI is looking for a maximum 61-inch round that would supplement, “Naval Surface Fire Support (NSFS) / Land Attack missions, and increase capabilities for Anti-Surface Warfare (ASuW), including against Fast Attack Craft (FAC) and Fast In-Shore Attack Craft (FIAC),” according to the document.
BAE Systems told USNI News it planned to submit its internally developed Multi Service – Standard Guided Projectile (MS-SGP) in response to the RFI.
“When fired from a Mk 45 Mod 4, our MS-SGP will deliver fires to stationary or moving targets out to 54 nautical miles,” said Tom Pfenning, BAE Systems, Director – Munitions Programs in a Friday statement to USNI News.
Raytheon also submitted information on on its Excalibur guided projectile, a company spokeswoman told USNI News on June 4, following an earlier version of this post.
“Raytheon has submitted a response to the U.S. Navy’s RFI for extended range guided projectile,” read the statement.
“Raytheon has demonstrated the ability to develop and produce an affordable, reliable guided projectile for the U.S. Army with Excalibur Ia and Ib that consistently meets and exceeds warfighter requirements.”
Italian firm Oto Melara is also reported to be submitting its 127 mm Vulcano guided long-range projectile, according to a report in Jane’s Defence Weekly. Responses to the RFI are due to NAVSEA by Wednesday.
http://www.baesystems.com/product/BAES_157359/5-multi-service---standard-guided-projectile;baeSessionId=FrJ1akOS4DPROXOy8GOm8gQH86OSMkxA9aLwKVZgnYdN8RAqlghA!-577059306?_afrLoop=1671165625616000&_afrWindowMode=0&_afrWindowId=null
With more than fifty-five Mk 45 Mod 4 Naval Guns deployed worldwide, the 5-Inch Multi Service - SGP greatly expands the capacity to provide long range joint fires and support asymmetric operations around the world. The Mk 45 Mod 4 will deliver 5-Inch fires at a maximum rate of 10 rounds per minute to 52 nautical miles to achieve desired effects. The 5-Inch Multi Service - SGP offers rapid time of flight and the capability of in-flight retargeting to address moving targets, changing target conditions, and surface threats.
.pdf datasheet on the round here:
http://www.baesystems.com/cs/groups/public/documents/document/mdaw/mdqx/~edisp/baes_027604.pdf
Video of test firing.
https://www.youtube.com/watch?v=LGN4zyPwMdw
http://ukarmedforcescommentary.blogspot.com/2013/07/a-new-golden-era-for-naval-guns.html
Regarding Vulcano round with an IR seeker:
The IIR seeker is instead meant primarily for anti-ship role. This variant of the round is in fact produced only for the 127mm naval guns. Targeting enemy ships on the open sea is a complex job, and it might be very hard, if not flat-out impossible, to have a third party observer marking the target with a laser. The anti-ship VULCANO is meant to be fired over the area where an enemy ship is known to be sailing, and engage the target on its own.
The ammunition is thus programmed to enter a descending trajectory already a few miles before entering the target area, allowing the built-in IIR seeker to scan the surface of the sea to detect and track the heat signature of the enemy vessel. Once the target is located, the maneuvering round will pursue it, using its canards and fins to steer to compensate for the enemy’s evasive maneuvers.
Much cheaper than an anti-ship missile, the VULCANO IIR is much less deadly, taken singularly, since its warhead is much, much smaller. However, a dart as small and fast as a VULCANO is considerably harder to detect, track and engage with hard-kill defences such as CIWS guns and missiles. Besides, a big number of guided shells can be fired in very short time against the same target, saturating its defences and inflicting deadly damage with multiple hits.
The anti-ship ammunition has shorter legs, since it begins to descend from its ballistic trajectory much earlier than the other variants, to enable the IIR seeker to find the target. A warship will be engaged at around 70 to 80 km.
Great to see the dev's are still looking to help noobs out.