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The General Physics
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Let's start with saying, that the Vanquisher Mothership is a big ship.
It is by far the biggest ship I have ever completed.

As many of you will know, in Space Engineers, generally the bigger the ship gets, the worse its
handling will become.

This is due to the fact that, if any mass gets further away from the center of mass, it also
gets harder to accelerate. This is physics and the game does model it, so there is no way
around it.

The only way to mitigate this is to build in a way, where you have most of a ships mass in the
center of it.

As a side note, this is why the Revelation can't turn for s***.
The front is heavy, because it is huge and the rear end is heavy,
because of all the thrusters, while the middle has a big hole in it.

This is pretty much the worst case scenario for mass distribution, but it looks
cool so I went with it.

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The Vanquishers Case
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With the Vanquisher I tried to build it with the physics in mind.
So even though it is about 250 meters longer than the Revelation it would still
be able to turn at least a bit.

I "think" this worked, because when you turn it feels like it turns about as quickly
as the Revelation, but on a much lower sim speed. Just don't expect any miracles.

This was achieved of course by moving most of the heavy blocks more towards the center.
These blocks include the tilting large ion thrusters, the large atmo thruster and
also the jump drives. The large ions and the jump drives in particular are very dense blocks,
that make a big difference, when placed correctly.

So, for it's size, the Vanquisher turns really good, as dumb as that sounds.

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The only problem it has is rolling.
Although it is not as "long" from side to side, it doesn't really roll too well.

This has two causes.
The first one is, that gyroscopes are less powerful on the roll axis. The ships axes are defined
based on the cockpit orientation, not the gyroscope orientation.

The second factor is, that turning by mouse movement is stronger than turning by
key input. Since you only have the keys to roll, this is an issue.

Also, if you combine mouse movement and key inputs to turn, the gyroscopes won't even
try to stop you, while you reposition your mouse.

All this makes rolling a ship way harder than turning a ship.
It is also the reason why really tall ships and really wide ships don't work in
Space Engineers. They both have the roll axis as the one, which is the
hardest to spin, but you have the least force to spin it.

Luckily you can build cockpits, or preferably remote control blocks, that are rotated
by 90 degrees to your normal cockpit. That way you can switch into the remote control
to roll better.

While this is really cumbersome to use it was necessary for the Vanquisher.
Otherwise I would get flooded by comments saying, that the ship doesn't roll.

This is why the Vanquisher has two remote control blocks, that are set up the same.
The first one is for normal steering, the second one is for roll only.

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The Thrusters
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Turning a ship like the Vanquisher is hard enough, so what do you do, when you
want to get somewhere?

You need thrusters of course - and a lot of them. The Vanquisher has over 1200 thrusters.
Most of them, almost 1000, are large thrusters, because they have better thrust to
weight ratios than the small variants.

While the ship is in space mode the ion thrust is distributed around in all directions,
but the biggest part of it is forward thrust.
It can actually almost get to 100m/s in its own length, which is pretty good, when
you compare that to other ships. It needs just over 1000m to get to top speed
and only about 1300m to get stopped again.

On planets, when most of the thrust is needed to keep it afloat, the movement does
suffer of course, but that's just the way it is.

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The Jumping
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But what do you do, when normal sublight speed isn't enough?

Well, you simply add all the jumpdrives you can imagine. With around 240 jumpdrives,
the Vanquisher can achieve jump distances well over 4000km.