I've always had an easy time beating Romulan and Hirogen battleships. Actually, aside from Deep Space Encounters, Fleet Actions, and so on...I've only died twice playing regular PvE mission content.
It should be said, though...with custom power settings and power abilities, I can get up to 125 weapons power, while still maintaining something like 70+ shields. You need offensive firepower and decent protection to slug it out with a Battleship. I do play Cruiser, though, so I can get away with this. Science Vessel and Escorts would need other strategies.
As others have noted, Science Team will break out out of Viral Matrix - previously it didn't, but they've patched it so all the Team powers can be now used while held. This helps a lot, though I'd already finished most of the Romulan space content by the time that fix came in. Polarize Hull breaks tractor beams.
But you can get by without either of those powers. It just makes things easier if you have 'em.
It's the "shut down your propulsion, weapons and shields and fire a heavy plasma torp" trick that really hurts with them. At the time, I was flying a Teir 2 escort ship (so I may as well have been flying a paper aeroplane for all the defence I had) and had to level up to an Akira before I could finish an Apex.
Knowing what I know now, there's two vital skills you need. The first is the science skill, Jam sensors. The second is the tactical skill, Torpedo High Yield. Couple these two with either full power shunted to weapons or the engineering skill, Emergency power to weapons. If you keep jamming the **** out of the BS it should keep their nasty little trick off your back. Using the beam power to slice through their shields, once you're through, hit them with a high yeild torp and they go down pretty damn fast. I'd also recomend having a few engine batteries to hand incase you do get slapped around so you're able to move out of weapons range and repair.
f you don't have access to these skills, you could try kiting them. It'll be a lengthy battle but should still work.
Is it just me or does other people have trouble defeating the romulan d'deredex ship and hirogen apex battleships. I think they went overboard on making those as difficult to destroy as they are.
Takes me all of about 10 to 15seconds with my escort...
if i dont screw up ..
If I do, I can still do it in less than 30seconds.
11km out pop cannon rapidfire, attack pattern beta, high yield torpedos, and fire on my mark ...star firing immediately when they come into range and then sensor jam them to keep them from hitting me with viral matrix or whatever ... fire my torpedos then back to all phasers ..a few seconds later they are dead. rinse repeat.
If all that doesnt kill them I wait for the root then after, hit evasive manuevers to get some distance, when that ends turn on them, pop attack pattern alpha, overload beam weapons, and finsh them off.
I routinely melt them like candle wax with my escort.
You just need to use your skills wisely, and not just the ones with buttons to click. Don't sit still in one place, try to stay out of the firing arc for torps, and pay attention to cooldowns.
One of the best tricks I've found is to approach the side of the target from a high angle to get in an initial alpha strike. Pop your HYT early, as you approach firing range, so that when you fire the CD has less time to tick before it's ready again. This is good if you use phasers or something else that may negate shields long enough for that salvo to hit hull. Hammer it as you fly past, then jam sensors so you can maneuver and hit again while the enemy is trying to do the same to you. At present, my JS lasts 20 seconds, which is a long time to sit there with your hands tied in combat, and generally enough time to dish out a serious beating.
You may take a hit from the energy weapons, but can usually avoid his torpedo attacks this way (which are good if you're fighting something using plasma to avoid the dot) and can generally kill the thing in short order.
I currently use a mix of disruptor and tetryon for the cannons and turrets and one set of quantum torps, which works well. Waiting on respecs to try out different combos of the higher grade weapons. Your mileage may vary, depending on setup.
I actually find the battleships to be the easiest part of the PvE missions. I am Tactical/Escort and I slaughter them before they even get within 5km of me. I use cannon rapidfire, attack pattern beta, high yield torpedos, emergency power to weapons and fire on my mark. They die very quickly with this.
Battleships have large amounts of shields and they large regeneration pulses. Do you have to take their shields down fast. That means Attack mode (Weapon power at 100.). One of the better BO skills vs Battleships is Science Team. But the timing on using it is tricky. That's because it will counter Viral Matrix, and it's will also give you an instance bump to your shield levels as well as give some extra damage resistance for your shields.
Jam Sensors or Polarize Hull ill negate a Tractor Beam, and both have some added benefit as well. (a Placate or extra damage resistance). But you can survive a Tractor Beam if you keep Reinforcing the facing shield (and possible toss in Emergy Power to Shield or Science Team). And keep an eye out for a Heavy Plasma Torpedo. If the damage itself doesn't do you in, the Plasma Fire DoT might do it. At RA5, those procs can be going 250+ pts a tick. Those add up quick.
I run a cruiser as well and although it does take me a bit, slugging out a battleship is usually rather fun. (Until they tag you with Viral Matrix - life sucks for a bit)
They are big lumbering beasts. I use the Attack power setting, and just keep strafing across them. Anytime I run tail to nose or side to side, I drop off some mines in my wake, turn for broadside phaser/disruptor hits. If I can keep turning enough, throw a quantum torp in. I do not worry with the throttle much - push it all the way up, and leave it there.
Make another 'strafe run' and keep doing so. When you see a shield drop, make sure you get a torp in there.
If you do this in a 'figure 8 pattern' and judiciously use the rotate shields and EPS, it is easy enough to keep your shield strength up high enough on the shields that face the battleship. If you can get set up that you are doing this mainly side to side, it works out really well.
Save Evasive for when you see a shield drop, so you can quickly turn and throw a torp in the side.
I run an escort and have few problems with warbirds, Hirogen ships are even easier. Its pretty easy in a heavy escort but I was even able to take down warbirds in a T2 escort with a little work.
If you use your CDs correctly you should have shields down and a HYT into them before closing into range where they can mess with you.
another suggestion for fighting against cruiser class ships (battleships are just big cruisers), avoid the broadside hit them at the fore or aft (preferably aft), if you pass a battleships broadside your gonna get it from all his energy weapon banks at once and decimate your shields. Kinda like how you should try to hit escorts from the side or aft to avoid the cannon firing arcs (though romulan escorts will pop EM and try to keep you in their cannon arcs for as long as possible).
I play a tac in a science ship and I have no problems with any Battleship. I use sci against their weapons, tacheon beam against shields, pop viral matrix, reverse shield polarity to withstand their alpha with no damage while waiting for the viral to creep its way over, do alpha and beam overload then weapons battery to recharge quick, by this time their shield is usually down and I go to town with quantums.
When I'm playing with a friend who has multiple jam sensors, neither of us ever get hit much.
I also have my science configured with 3 forward dual beam phasers with power set to full weps. I have 2x 2.2EPS devices and my weapon power never goes below 90.