U.S. Navy photo courtesy of General Dynamics Bath Iron Works
The Navy's new stealthy high-tech destroyer has begun "Acceptance Trials" to assess, refine and further develop its many technologies including navigation, propulsion, auxiliary systems, fire protection and damage control capabilities, service officials said.
The ship, called the DDG 100 or USS Zumwalt, departed Bath, Maine, with a crew of assessment professionals on board called the Navy's Board of Inspection and Survey, or INSURV.
"This underway period is specifically scheduled to demonstrate ship systems to the Navy's Board of Inspection and Survey and the ship will return to port upon conclusion of the demonstrations," Navy spokesman Matthew Leonard told Scout Warrior in a written statement.
The USS Zumwalt, the first in a series of three next-generation destroyers planned for the fleet, is slated to be operational by 2019, he added. The new ship will formally deliver to the Navy later this year.
"DDG 1000 delivery is expected after successful Acceptance Trials and will include fully capable Hull Maintenance and Electrical (HM&E) systems. Following HM&E delivery, and a brief crew certification period at Bath Iron Works, the ship will sail to Baltimore for commissioning (which is scheduled for Oct. 15) and then transit to its homeport in San Diego where Mission Systems Activation will occur," Leonard added.
Before beginning Acceptance Trials, the DDG 1000 went through a process known as "Builder Trials" during which the contract building the ship, Bath Iron Works, tests the ship's systems and technologies.
New Ship Technologies
Once operational, the Navy's first high-tech Zumwalt-class DDG 1000 destroyer will pioneer a handful of yet-to-be seen destroyer ship technologies, service officials have explained.
Not only does the ship have a new electric drive system for propulsion as opposed to diesel or steam –but the ship is configured with sonar, sensors, electronics, computing technology and weapons systems which have not previously been engineered into a Navy destroyer or comparable ship, said Raytheon officials said.
The Zumwalt-class destroyers will have unprecedented mine-detecting sonar technologies for destroyer through utilization of what's called an integrated undersea warfare system, or IUW; IUW is a dual-band sonar technology which uses both medium and high-frequency detection, Raytheon developers explained.
Medium sonar frequency is engineered to detect ships and submarines, whereas high-frequency sonar adds the ability to avoid sea-mines, they added.
USS Zumwalt, first of three commissioned DDG-1000 Destroyers | U.S. Navy
It makes sense that the DDG 1000 would be engineered detect mines because the destroyer is, in part, being developed for land-attack missions, an activity likely to bring the vessel closer to shore than previous destroyers might be prepared to sail. The ship is engineered with a more shallow-draft to better enable it to operate in shallower waters than most deep-water ships.
The DDG 1000 is built with what's called a total ship computing environment, meaning software and blade servers manage not just the weapons systems on the ship but also handle the radar and fire control software and various logistical items such as water, fuel, oil and power for the ship, Raytheon officials said.
The blade servers run seven million lines of code, officials explained.
The ship is engineered to fire Tomahawk missiles as well as torpedoes, Evolved Sea Sparrow Missile and a range of standard missiles such as the SM2, SM3 and SM6.
The ship also has a 155mm long range, precision-capable gun called the Advanced Gun System made by BAE Systems. The weapon can, among other things, fire a munition called the Long-Range Land Attack Projectile which can strike target at ranges out to 64 nautical miles.
Additionally, as a survivability enhancing measure, the total ship computing environment also ensures additional layers or redundancy to ensure that messages and information can be delivered across the ship in the event of attack, Raytheon officials said.
Many of the blade servers and other technical items are housed in structures called electronic modular enclosures, or EMEs. There are 16 EME's built on each ship, each with more than 235 electronics cabinets. The structures are designed to safeguard much of the core electronics for the ship.
The ship's integrated power system, which includes its electric propulsion, helps generate up to 58 megawatts of on-board electrical power, something seen as key to the future when it comes to ship technologies and the application of anticipated future weapons systems such as laser weapons and rail guns.
The ship is also built with a new kind of vertical launch tubes which are engineered into the hull near the perimeter of the ship. Called Peripheral Vertical Launch System, the tubes are integrated with the hull around the ship's periphery in order to ensure that weapons can keep firing in the event of damage. Instead of having all of the launch tubes in succession or near one another, the DDG 1000 has spread them out in order to mitigate risk in the event attack, developers said.
In total, there are 80 launch tubes built into the hull of the DDG 1000; the Peripheral Vertical Launch System involves a collaborative effort between Raytheon and BAE Systems.
The DDG 1000 also has an AN/SPY-3 X-band multi-function radar which is described as volume-search capable, meaning it can detect threats at higher volumes than other comparable radar systems, Raytheon officials added. The volume search capability, which can be added through software upgrades, enables the radar to detect a wider range of missile flight profiles, he added.
As the first Zumwalt-class destroyer gets ready for delivery to the Navy, construction of the second is already underway. The DDG 1001 is already more than 75-percent complete and fabrication of DDG 1002 is already underway, Navy officials said.