Ssn (1996) Page 10

  Within minutes, Cheyenne was at flank speed, on course 185, and at one thousand feet. The bearing rate presented to the Chinese torpedo made no difference as the SET-53 locked on to the knuckle created by Cheyenne‘s powerful maneuver. That was a direct result of Mack’s order to cavitate, and had formed over a thousand yards away from Cheyenne’s current position.

  “Conn, sonar, two explosions, bearing 055, range 8,540 yards.” Knowing the depth of water and the sound velocity profile, sonar could determine the range by the difference in time between the direct path and the bottom bounce path of the incoming explosion noises.

  Above the cheers in the control room, Captain Mackey ordered, “Chief of the watch, over the 1MC, secure from rig ship for depth charge.”

  When the word was passed, Mack picked up the 1MC microphone and spoke to the officers and men of Cheyenne. “This is the captain. Gentlemen, Cheyenne has sent another enemy submarine to its fiery grave. Excellent work. You can be truly proud of your teamwork, each and every one of you. Cheyenne is you. Carry on.”

  Replacing the microphone, he added, “Chief of the watch, secure from battle stations.” Mack knew that the stand-down from the tension could easily be short lived, especially if the Han had been accompanied by quieter Kilo class diesels running on their batteries.

  The officers adjourned to the wardroom for the captain’s standard critique of the attack. Mack also had every battle stations sonar man there. This review was very positive, but Mack added a note of caution about not allowing their guard down. This was war, he pointed out, and the Chinese shouldn’t be expected to sit back and watch their submarine force be devastated. Cheyenne and her crew needed to proceed with caution back to an interdiction point so that they could detect and attack some of those Kilos.

  Mack’s plan was a good one, but it was circumvented by events. Even as he was critiquing their most recent battle, sonar reported regaining contact on the Alfa, Master 31. The Alfa was proceeding north toward the sounds of the Han’s demise, and Cheyenne’s turn toward the south during the torpedo evasion nicely closed the range.

  Mack’s attack on the Alfa started out the same as the attack on the Han, except that this time Captain Mackey elected to exercise torpedo tubes three and four. But that was as far as the similarity went. The Alfa, with its forty-knot speed, was able to evade both torpedoes.

  The Chinese had learned to drive the Alfa, Mack realized, but fortunately they still had things to learn about their submarine. If that had been a Russian crew on board that submarine, Cheyenne might have had to contend with their torpedoes.

  Mack wasn’t ready to take on the Kilo SSKs, which were probably lurking in the shoals while communicating with the Alfa, so he decided to withdraw to the deep water to the northwest. From there he could report the Han and Alfa attacks to CTF 74. He didn’t need to return to McKee yet since Cheyenne still had sixteen torpedoes. And he had to clear the area before Independence could steam north to the Spratlys.

  His message was quickly acknowledged by CTF 74, who passed traffic from the SEC and ASWC on board Independence. Cheyenne turned to the southwest and prepared herself for shallow water operations.

  “Conn, sonar, sonar contact bearing 195. Sounds like the Alfa, Master 31, coming back for more.”

  The captain ordered the towed array to short stay as Cheyenne ventured inside the 100-fathom curve south of Fiery Cross Reef. He intended to confuse the Chinese by operating in the shallow water. The Alfa SSN, he knew, would remain outside the shoals, unable to hear Cheyenne until—if things went according to plan—it was too late. A shorter range attack would preclude the Alfa from responding and evading the torpedoes.

  Battle stations were manned once again as the range to the Alfa closed to inside 40,000 yards—and none too soon, as sonar reported transient noises bearing 125 and 135. Mack nodded. As he’d expected, the Alfa was out in deeper water, but the Chinese Kilos had remained in the shoal waters, massing for guerrilla operations against Cheyenne.

  They could have been a problem, but Cheyenne was ready with two outer doors already open.

  “Snap shots, tubes one and two, bearings 125 and 135 respectively,” Mack ordered. That order meant that the Mk 48s would have to do their own thing in detecting, tracking, and sinking two of the Kilos, but Mack didn’t have the luxury of assisting them.

  It worked. The two torpedoes quickly acquired the Kilos. The two SSKs tried to flee, increasing speed and cavitating heavily, but to no avail. Both torpedoes found their marks and destroyed the SSKs, but Mack wasn’t satisfied. Where was the third Kilo? he wondered.

  He didn’t have long to wait before finding out.

  “Conn, sonar, we have transients bearing 180 that sound like Christmas balls falling off a tree and breaking ... like a tinkling sound. Seems that the third Kilo was spooked by our torpedoes and ran into a coral reef.”

  Mack grinned. He was happy to take the kills any way he could. Only the Alfa remained, and Cheyenne had lost contact after the first explosion against the Kilos.

  Sonar was not able to reacquire the Russian submarine, and Mack gave the orders to take Cheyenne out of the area. They’d have another chance at the Alfa, he hoped, before he had to submit the next patrol report.

  The only question that was bothering him was how the Alfa had slipped away. He hadn’t expected that from a Chinese crew on a Russian submarine.

  Then Cheyenne moved into deeper waters. As she resumed her patrol, Mack found himself wondering whether the Alfa had acquired a Russian adviser, or, worse, a full Russian crew.

  A few days later, Cheyenne had been ordered to head to the south to meet up with McKee, anchored near Brunei, for a quick reload and resupply. Then she was to rendezvous with the Independence Battle Group and await further orders from CTF 74. Mack didn’t know it yet, but they would not have the chance for a briefing in McKee’s war room for some time to come.

  5.

  Interdiction

  The Independence Battle Group, to which Cheyenne was assigned as the sole SSN(DS), was operating south of the Spratly Islands. Having completed a quick reload and resupply, Cheyenne was with them, patrolling around their position, keeping the surface ships safe. Only this time, Mack’s patrol area was not the forward 180 degrees, which he preferred. Instead, it was an area the shape of a donut: a full 360-degree annulus, centered on Independence, with an inner diameter of forty nautical miles and an outer diameter of eighty nautical miles. Mack didn’t like being reined in like that.

  “Radio, conn, stream the floating wire,” the OOD ordered.

  “Conn, radio, stream the floating wire, aye, sir.”

  Cheyenne’s floating wire communications antenna was functionally similar to the communications buoys carried by Ohio class Trident ballistic missile submarines. Cheyenne could deploy this wire from depth, without having to raise a communications mast above the surface.

  “Incoming message traffic,” the communicator said. He’d learned his lesson from their previous patrol and did not speculate on their new orders.

  The OOD acknowledged and summoned both the captain and the executive officer to the conn.

  Mack arrived in a few minutes along with the executive officer. Captain Mackey read the message, passed it to the executive officer, and then called a meeting in the wardroom. He requested that the communicator, the executive officer, the combat systems officer, and the engineer officer be present.

  “We have our new orders,” Mack said as the briefing began. “Naval intelligence has determined that a large Chinese surface task group has been sighted leaving Zhanjiang Naval Base, China. Satellite reconnaissance has confirmed this information. The task group is expected to form in the Mandarin Sea south of that base. All information indicates that they are headed in the direction of the Spratly Islands. Normally, they would be taken care of by aircraft and surface units. However, the Navy doesn’t want to send the carrier too far north as yet, or to divert any of the carrier’s defensive escorts away from their protective
zone. They are worried about a Chinese air attack on the Battle Group.”

  Mack looked around at his officers. They were a good group, and getting better with every mission. His last post-attack critique had reinstilled the need for redundancy, the formal repeat backs, during the attack phase. There was no room for error.

  “Our orders,” he went on, “are to detach from the Battle Group and proceed north of the Spratly Islands to attack the Chinese task group.”

  Cheyenne was currently deployed south of the Spratly Islands chain. Her new orders would send her on a voyage of over 660 miles.

  She had completed her mini-refit with McKee only a few days earlier, and the weapons she had taken on board during the load-out should serve nicely in the upcoming battle. She had twenty Mk 48 torpedoes and six Harpoon missiles ready for loading in her torpedo tubes, and six Tomahawk antishipping missiles (TASM) in her VLS tubes.

  This was the time when some submarine commanders delivered a pep talk to the officers and crew, but Mack didn’t believe in that. His men were all professionals, and he wanted them to act that way. They didn’t need to be pumped up to do their jobs. They simply needed to carry out their duties in a calm and proficient fashion.

  Mack smiled to himself at that thought. He’d leave the rah-rah speeches for cheerleaders and football coaches, who dealt with million-dollar prima donnas. Mack much preferred being able to rely on the competence and professionalism of the sailors on board Cheyenne.

  Over a thousand miles away, the Chinese naval base at Zhanjiang was bustling with activity. The surface group had finally left port and was now headed in the direction of the Chinese Spratly Islands. They were going to position themselves between the American Carrier Battle Group and their islands in order to prevent the U.S. Navy from taking any actions against the Spratlys.

  This surface group was one of the most powerful surface-action groups ever to be assembled by the Chinese navy. Consisting of two of the new Luhu destroyers, three Luda I destroyers, and three Jianghu frigates, the group totaled eight ships in all, and they were all heavily armed.

  The two new Luhu destroyers carried two French Z- 9A helicopters apiece, and each surface ship carried a substantial quantity of surface-to-surface antiship missiles. Many of their vessels also were equipped with the French naval Crotale SAM system, which could take out any American helicopters that might stray too close to the Chinese force.

  The fleet had been rushed to sea, and though they were well armed, their commander couldn’t help wondering how well prepared they were. The Chinese People’s Liberation Army (Navy) had made great strides in gaining new equipment and training since he had graduated from the Canton Surface Vessel Academy, yet there were great strides remaining.

  The thing that bothered the Chinese commander the most was that, for all the strength and numbers of his surface group, he did not have the support of many submarines. The military, he knew, was strong in numbers, but much of their equipment was old and antiquated. Were the submarines in such a poor state of disrepair that they were unable to go to sea?

  This bothered him in part because of its implications for the Chinese armed forces as a whole. More important, however, like most of the officers in the navy, he had heard rumors of American submarines wreaking havoc on the Chinese forces in this area. If those rumors were true, without many SSNs or SSKs of his own, his surface group was a large, heavily armed, sitting duck.

  On board Cheyenne, Mack and his officers and crew were doing everything they could to substantiate those rumors—and maybe add a few new ones.

  Four hundred feet below the surface, Cheyenne picked up her next sonar contact.

  “Conn, sonar,” the sonar supervisor reported, “we’re getting a sonar contact, sounds like a Chinese merchant ship. It’s heading toward Swallow Reef.”

  Mack thought the situation over quickly and decided to ignore the merchant vessel. Cheyenne had a mission to perform, and he didn’t want to be delayed by taking out a noncombatant. He also didn’t want to alert the Chinese task group that Cheyenne was heading their way.

  Mack went to the conn. “Proceed at full speed, course 316,” he ordered the OOD. “Let the merchant go.”

  The OOD acknowledged his captain’s order.

  Slowly the Chinese merchant vessel steamed out of sonar range as Cheyenne continued on her way, not knowing that it had been a target and was saved by the graciousness of Captain Mack Mackey.

  Eighty-five miles southwest of the Spratlys, Cheyenne turned and headed northwest to bypass the Chinese-occupied Spratlys. Naval intelligence had reported a high probability of mines in the area, and Mack had opted to avoid the risk.

  The Chinese task group was still being tracked by the U.S. satellites. In addition, the carriers Independence and Nimitz—which were currently sailing in the Pacific—were monitoring radio traffic and electronic signals for any indications of the Chinese fleet’s plans.

  Cheyenne continued the “sprint-and-drift” technique during her long transit, but she also periodically went to periscope depth to communicate via SSIXS and to obtain better information on the position of the Chinese fleet. She also received a refinement of her orders—a refinement that Mack approved of, even though it carried an element of risk.

  Cheyenne was scheduled to arrive on station a full day ahead of the Chinese task group. Within twelve hours, Chinese helicopters would come within range of Cheyenne’s position, dropping lines of sonobuoys all around them. Cheyenne would have to stay like this, deep and silent, until the task group came within fifty miles of her position. Depending upon Mack’s assessment at the time, his SSN was then supposed to proceed to shallow depth and launch her Harpoon antiship missiles. If there were more targets than Harpoons, Cheyenne was instructed to attack the remaining ships with her Tomahawk antiship missiles (TASM).

  The TASM was a longer range missile than the Harpoon, and it carried a warhead with nearly twice the explosive. The Harpoon, on the other hand, was smaller and about fifty knots faster and thus much harder to destroy. The alternative was for Cheyenne to use only her Tomahawks and attack the Chinese task group from more than 250 miles away. But that would require external targeting information from either a U.S. aircraft or a satellite.

  That would be safer for Cheyenne, at least initially, but with only six Tomahawks on board, Cheyenne had no chance to destroy the entire task group from such a distance. Mack would then have to decide between allowing at least two Chinese ships to get away, or waiting for those ships to close to within Harpoon range before he could attack them.

  Mack didn’t want to do that. In the long run, it put Cheyenne more at risk. Launching the Tomahawks would give away their general bearing, and every helicopter and surface ship in the area would be coming after Cheyenne.

  No, Mack liked the other plan better. He’d wait until he could release a large number of missiles all at the same time. Cheyenne would then dive deep and head back to the Sulu Sea and the waiting submarine tender McKee in order to rearm and resupply for another mission.

  Mack had the OOD slow and come shallow enough for the floating wire to copy.

  “Conn, radio, we’re receiving important traffic on the floating wire. It seems there may be some submarines operating at our planned launch point. The reports indicate that they might even be Alfas.”

  “Maintain your present course and speed,” Mack said to the OOD.

  “Maintain my present course and speed, aye, sir,” the OOD replied.

  Cheyenne was making ten knots at 247 feet, close to the point of inception of cavitation. Mack made his best selection of speed versus depth for continuous broadcast copying.

  The American frigate Ingraham (FFG-61) was nearly five hundred miles from Independence, and she was alone. She had been ordered to an area north of the Spratly Islands so that her two SH-60B Seahawk helicopters could help Cheyenne’s target missiles. Her captain was pleased with neither her mission nor the reasoning behind it.

  Ingraham, an Oliver Hazard Perr
y class frigate, had been selected for this mission for two simple reasons: she could do the job and she was expendable. The 3,500-ton Ingraham was cheap, inexpensive, and had about 150 fewer sailors on board than did the more powerful Ticonderoga class cruisers.

  The captain had received word of this mission three days ago when his ship was dispatched from the Nimitz Carrier Battle Group into the South China Sea. He knew that Nimitz could have sent one of the more powerful Aegis cruisers or destroyers, but that would have left the carrier more vulnerable to attack.

  Ingraham’s captain didn’t like being thought of as expendable—but he couldn’t really argue with the logic. And it didn’t matter anyway. He would carry out his orders to the best of his ability, whether he liked them or not.

  He didn’t know much about Cheyenne, the submarine he would be supporting. He knew that, like Ingraham herself, Cheyenne was the last of her class. He also knew that Cheyenne, though commissioned less than a year earlier, had already become one of the most successful submarines in American naval history. And he knew that her skipper, Captain Mackey, was a good man and a highly respected commanding officer. He hoped that this mission would put his own selection board jacket on the top of the pile when the 0-6 selection board was next in session.

  For this support mission, Ingraham was equipped with a full loadout of weapons, which had both pleased and surprised her Captain. He guessed that the full loadout was his admiral’s way of compensating for sending Ingraham on such a mission, without any support. Ingraham’ s armament included thirty-six Standard SM-1 surface-to-air missiles, four Harpoon missiles, and a full load of Mk 46 torpedoes for their Mk 32 torpedo tubes, plus lots of ammunition for both their Mk 75 gun and their 20mm Phalanx CIWS. The frigate also carried two SH- 60B Seahawks, each of which was equipped with a powerful APS-124 surface-search radar under its nose. This radar would be invaluable in providing mid-course guidance to the antiship missiles launched from Cheyenne.