• We have updated our Community Code of Conduct. Please read through the new rules for the forum that are an integral part of Paradox Interactive’s User Agreement.

PanzerMan7

Field Marshal
46 Badges
May 19, 2009
2.525
210
  • Victoria: Revolutions
  • Stellaris: Leviathans Story Pack
  • Arsenal of Democracy
  • Stellaris - Path to Destruction bundle
  • Victoria 2: Heart of Darkness
  • Victoria 2: A House Divided
  • Supreme Ruler: Cold War
  • Sword of the Stars II
  • Semper Fi
  • Naval War: Arctic Circle
  • March of the Eagles
  • Iron Cross
  • Hearts of Iron III: Their Finest Hour
  • Hearts of Iron III
  • For the Motherland
  • Darkest Hour
  • Stellaris: Necroids
  • Hearts of Iron IV: Expansion Pass
  • Stellaris: Distant Stars
  • Stellaris: Megacorp
  • Stellaris: Ancient Relics
  • Steel Division: Normandy 44 -  Back to Hell
  • Stellaris: Apocalypse
  • Stellaris: Lithoids
  • Hearts of Iron IV: La Resistance
  • Stellaris: Federations
  • Battle for Bosporus
  • Hearts of Iron IV: Expansion Pass
  • Stellaris: Nemesis
  • Hearts of Iron IV: By Blood Alone
  • Hearts of Iron IV: No Step Back
  • Stellaris: Humanoids Species Pack
  • Hearts of Iron IV: Expansion Pass
  • Hearts of Iron IV: Death or Dishonor
  • Steel Division: Normandy 44
  • Stellaris: Digital Anniversary Edition
  • Hearts of Iron IV: Cadet
  • Stellaris
  • 500k Club
  • Victoria 2
  • Europa Universalis IV
  • Steel Division: Normand 44 - Second Wave
  • Stellaris: Synthetic Dawn
  • Hearts of Iron IV: Expansion Pass
  • Hearts of Iron III Collection
  • Crusader Kings II
If I upgrade the hell out of German ship speed, perhaps even taking the atlantic fleet designer, I can get pretty quick ships. But is speed enough for surface raiders?
 

uberjedi

Colonel
65 Badges
Oct 21, 2007
1.003
439
  • Crusader Kings II
  • Arsenal of Democracy
  • Supreme Ruler: Cold War
  • Supreme Ruler 2020
  • Semper Fi
  • For the Motherland
  • Hearts of Iron III
  • Crusader Kings II: Horse Lords
  • Europa Universalis IV: Rule Britannia
  • Europa Universalis IV: Golden Century
  • Crusader Kings II: Conclave
  • Crusader Kings III
  • Crusader Kings II: Holy Fury
  • Hearts of Iron IV: Cadet
  • Crusader Kings II: Reapers Due
  • Europa Universalis IV: Rights of Man
  • Stellaris: Digital Anniversary Edition
  • Hearts of Iron IV: Together for Victory
  • Crusader Kings II: Monks and Mystics
  • Europa Universalis 4: Emperor
  • Europa Universalis IV: Mandate of Heaven
  • Europa Universalis IV: Dharma
  • Hearts of Iron IV: Death or Dishonor
  • Cities: Skylines - Green Cities
  • Europa Universalis IV: Cradle of Civilization
  • Stellaris: Distant Stars
  • Hearts of Iron IV: Expansion Pass
  • Victoria 2
  • Hearts of Iron IV: Expansion Pass
  • Europa Universalis IV
  • Europa Universalis IV: Common Sense
  • Prison Architect
  • Hearts of Iron IV: By Blood Alone
  • Hearts of Iron IV: La Resistance
  • 500k Club
  • Europa Universalis IV: El Dorado
  • Battle for Bosporus
  • Crusader Kings II: Way of Life
  • Hearts of Iron IV: No Step Back
  • Europa Universalis IV: Conquest of Paradise
  • Crusader Kings II: Rajas of India
  • Crusader Kings II: The Old Gods
  • Stellaris: Synthetic Dawn
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: Sword of Islam
  • Europa Universalis IV: Art of War
  • Stellaris: Leviathans Story Pack
  • Stellaris
  • Cities: Skylines
  • Europa Universalis IV: Pre-order
As Britain, I always delete all subs and just use the 3 starting BCs as raiders.
Works rather well and even if they run into enemy fleets they can do some damage.
 

CharlieFox

Colonel
68 Badges
Oct 28, 2012
839
1.149
  • Sword of the Stars
  • For the Motherland
  • Hearts of Iron III
  • Hearts of Iron III: Their Finest Hour
  • Heir to the Throne
  • Magicka
  • Europa Universalis IV: Res Publica
  • Victoria: Revolutions
  • Semper Fi
  • Cities in Motion 2
  • Victoria 2: A House Divided
  • Victoria 2: Heart of Darkness
  • Crusader Kings II: Monks and Mystics
  • Age of Wonders III
  • Cities: Skylines - After Dark
  • Europa Universalis IV: Cossacks
  • Stellaris - Path to Destruction bundle
  • Crusader Kings II: Reapers Due
  • Europa Universalis IV: Conquest of Paradise
  • Crusader Kings II: Charlemagne
  • Crusader Kings II: Legacy of Rome
  • Crusader Kings II: The Old Gods
  • Crusader Kings II
  • Cities in Motion
  • Crusader Kings II: Rajas of India
  • Crusader Kings II: The Republic
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: Sunset Invasion
  • Crusader Kings II: Sword of Islam
  • Europa Universalis III
  • Europa Universalis III: Chronicles
  • Divine Wind
  • Europa Universalis IV: Wealth of Nations
  • Europa Universalis IV: Art of War
  • Stellaris: Leviathans Story Pack
  • Europa Universalis IV: Rights of Man
  • Hearts of Iron IV: Colonel
  • Hearts of Iron IV: Cadet
  • Cities: Skylines - Natural Disasters
  • Stellaris Sign-up
  • Hearts of Iron IV Sign-up
  • Stellaris: Galaxy Edition
  • Stellaris: Galaxy Edition
  • Stellaris
  • Crusader Kings II: Horse Lords
  • Pillars of Eternity
  • Crusader Kings II: Way of Life
  • Crusader Kings III
  • 500k Club
  • Victoria 2
As Britain, I always delete all subs and just use the 3 starting BCs as raiders.
Works rather well and even if they run into enemy fleets they can do some damage.

In my last game as Britain I put all my subs convoy raiding between Africa and South America and in the cape of new hope. They sank a lot of Axis shipping and I never lost a single sub as Axis were unable to send fleets to protect the convoys. Unless you are very short on manpower I don't think it's necessary to delete the subs.
 

Novat

Second Lieutenant
39 Badges
Nov 17, 2016
187
434
  • Crusader Kings II: Charlemagne
  • Stellaris - Path to Destruction bundle
  • Victoria 2: Heart of Darkness
  • Victoria 2: A House Divided
  • Europa Universalis IV: Res Publica
  • Magicka
  • Europa Universalis IV: Wealth of Nations
  • Europa Universalis IV: Conquest of Paradise
  • Europa Universalis IV: Call to arms event
  • Crusader Kings II: The Old Gods
  • Crusader Kings II
  • Stellaris: Megacorp
  • Hearts of Iron IV: No Step Back
  • Imperator: Rome
  • Prison Architect
  • Stellaris: Ancient Relics
  • Stellaris: Lithoids
  • Hearts of Iron IV: La Resistance
  • Stellaris: Federations
  • Crusader Kings III
  • Crusader Kings III: Royal Edition
  • Battle for Bosporus
  • Stellaris: Necroids
  • Stellaris: Nemesis
  • Stellaris: Distant Stars
  • Stellaris: Apocalypse
  • Hearts of Iron IV: Expansion Pass
  • Stellaris: Synthetic Dawn
  • Hearts of Iron IV: Death or Dishonor
  • Hearts of Iron IV: Together for Victory
  • Stellaris: Leviathans Story Pack
  • Hearts of Iron IV: Cadet
  • Stellaris
  • Magicka: Wizard Wars Founder Wizard
  • Cities: Skylines
  • War of the Roses
  • Europa Universalis IV
  • Victoria 2
  • Hearts of Iron IV: Expansion Pass
Fast destroyer and light cruiser fleets are extremely powerful for surface raiding. Provided you keep an eye on your navy, and your enemy don't send carriers to patrol the oceans. Which is pretty much impossible considering the lack of escort carriers in the game.

In multiplayer, you can cause endless frustration by playing co-op Germany for example, and have one player look after the navy.
 

sterrius

Field Marshal
104 Badges
Jan 18, 2009
2.671
5.749
  • Cities in Motion
  • Sword of the Stars II
  • Victoria 2
  • Magicka
  • Leviathan: Warships
  • Knights of Pen and Paper +1 Edition
  • Heir to the Throne
  • Warlock 2: The Exiled
  • Divine Wind
  • Europa Universalis III Complete
  • Dungeonland
  • Crusader Kings II
  • Darkest Hour
  • Stellaris Sign-up
  • Tyranny: Archon Edition
  • Crusader Kings II: Conclave
  • The Showdown Effect
  • Crusader Kings II: Horse Lords
  • Europa Universalis IV: Common Sense
  • Stellaris: Apocalypse
  • Hearts of Iron IV: Colonel
  • Pillars of Eternity
  • Hearts of Iron IV: Expansion Pass
  • Europa Universalis IV: Mandate of Heaven
  • Crusader Kings II: Way of Life
  • Europa Universalis IV: Rule Britannia
  • Europa Universalis IV: El Dorado
  • War of the Roses
  • 500k Club
  • Stellaris
  • Hearts of Iron IV: Death or Dishonor
  • Surviving Mars
  • Stellaris: Digital Anniversary Edition
  • Shadowrun: Dragonfall
  • Europa Universalis IV: Golden Century
  • Europa Universalis IV: Rights of Man
  • Stellaris: Humanoids Species Pack
  • Europa Universalis IV: Cradle of Civilization
  • Hearts of Iron IV: Cadet
  • Shadowrun Returns
  • Stellaris: Distant Stars
  • Stellaris: Leviathans Story Pack
  • Europa Universalis IV
  • BATTLETECH
  • Crusader Kings II: Reapers Due
  • Hearts of Iron IV: No Step Back
  • Europa Universalis III Complete
  • Surviving Mars: First Colony Edition
  • Europa Universalis III Complete
  • Europa Universalis IV: Dharma
They are viable but compared to subs they are much much worse in detection, specially with technology

Submarines can reach 30%+ detection chance when fully upgraded on interdiction. A DD or CL at best will get around 5-10%. Bigger ships even less.
This results in stacks of convoys having a lesser quantity to shoot down.

Trade interdiction increase submarine surface detection by +100%
Others by +50%

Other ships don´t get any increase. So they are viable if you're not planning putting a single penny on research.
 

Gyrvendal

Lt. General
97 Badges
Oct 2, 2012
1.522
1.887
  • Crusader Kings II: Monks and Mystics
  • King Arthur II
  • Europa Universalis IV: Res Publica
  • Victoria: Revolutions
  • Rome Gold
  • Semper Fi
  • Victoria 2: A House Divided
  • Victoria 2: Heart of Darkness
  • Rome: Vae Victis
  • Crusader Kings II: Jade Dragon
  • Crusader Kings II: Charlemagne
  • Steel Division: Normand 44 - Second Wave
  • Europa Universalis IV: Third Rome
  • Cities: Skylines - After Dark
  • Europa Universalis IV: Cossacks
  • Cities: Skylines - Snowfall
  • Europa Universalis IV: Mare Nostrum
  • Stellaris
  • Stellaris - Path to Destruction bundle
  • Hearts of Iron IV: Field Marshal
  • Hearts of Iron III: Their Finest Hour
  • Crusader Kings II
  • Crusader Kings II: Legacy of Rome
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Rajas of India
  • Crusader Kings II: The Republic
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: Sunset Invasion
  • Crusader Kings II: Sword of Islam
  • Europa Universalis III
  • Europa Universalis III: Chronicles
  • Divine Wind
  • Europa Universalis IV: Art of War
  • Heir to the Throne
  • Europa Universalis IV: Conquest of Paradise
  • Hearts of Iron III
  • Europa Universalis IV: Wealth of Nations
  • Europa Universalis IV: Call to arms event
  • For the Motherland
  • Tyranny: Archon Edition
  • Europa Universalis IV: Rights of Man
  • Crusader Kings II: Reapers Due
  • Hearts of Iron IV: Cadet
  • Stellaris Sign-up
  • Hearts of Iron IV Sign-up
  • Crusader Kings II: Conclave
  • Victoria 2
  • Crusader Kings II: Horse Lords
  • Hearts of Iron IV: No Step Back
  • Crusader Kings II: Way of Life
Technically light cruisers have the best detection of any ship. Submarines have crappy surface detection unless you upgrade your trade interdiction to the max and even then they have less surface detection than light cruisers.
So if your only concern is detection and enemy fleets can't reach you, then light cruisers should be the best raiders in theory.
 

Meglok

Grognard
32 Badges
Feb 29, 2012
7.462
3.771
  • Europa Universalis 4: Emperor
  • Europa Universalis IV
  • Imperator: Rome
  • Imperator: Rome - Magna Graecia
  • 500k Club
  • Battle for Bosporus
  • Hearts of Iron III
  • Hearts of Iron III Collection
  • Hearts of Iron III: Their Finest Hour
  • Europa Universalis IV: Pre-order
  • Europa Universalis IV: Call to arms event
  • Europa Universalis IV: Res Publica
  • Europa Universalis IV: Wealth of Nations
  • Europa Universalis IV: Mare Nostrum
  • Europa Universalis IV: Mandate of Heaven
  • Europa Universalis IV: Cradle of Civilization
  • Europa Universalis IV: Rule Britannia
  • Europa Universalis IV: Dharma
  • Europa Universalis IV: Golden Century
  • Europa Universalis IV: Rights of Man
  • Europa Universalis IV: Cossacks
  • Europa Universalis IV: Common Sense
  • Europa Universalis IV: El Dorado
  • Europa Universalis IV: Conquest of Paradise
  • Hearts of Iron IV: Death or Dishonor
  • Europa Universalis IV: Art of War
  • Europa Universalis IV: Third Rome
  • Hearts of Iron IV: Cadet
  • Hearts of Iron IV: Together for Victory
  • Hearts of Iron IV: Expansion Pass
  • Hearts of Iron IV: Expansion Pass
  • Hearts of Iron IV: La Resistance
If I upgrade the hell out of German ship speed, perhaps even taking the atlantic fleet designer, I can get pretty quick ships. But is speed enough for surface raiders?

You should also work down the doctrine line for raiders as it improves their abilities and reduces their visibility.

As others have said, raiders can work and will chew up and spit out the odd asw group they run into as long as the raider group is screened. The problem is when they run into a large surface or carrier group. Even the British AI will patrol with carrier groups from Spain to the North Sea. Your raiders are quickly turned into scrap metal unless you are microing. You have to be sinking a lot of convoys to make the tactic pay off, unless you have other strategic reasons for raiding.

In my last game as Britain I put all my subs convoy raiding between Africa and South America and in the cape of new hope. They sank a lot of Axis shipping and I never lost a single sub as Axis were unable to send fleets to protect the convoys. Unless you are very short on manpower I don't think it's necessary to delete the subs.

That is either just abusing the poor coding of the ai or a very foolish mp player. The idiotic coding that keep sending convoys and troops through the channel and around the Cape makes it too easy to hammer the axis AI. And if someone in mp was doing that, then doom on them.
 

sterrius

Field Marshal
104 Badges
Jan 18, 2009
2.671
5.749
  • Cities in Motion
  • Sword of the Stars II
  • Victoria 2
  • Magicka
  • Leviathan: Warships
  • Knights of Pen and Paper +1 Edition
  • Heir to the Throne
  • Warlock 2: The Exiled
  • Divine Wind
  • Europa Universalis III Complete
  • Dungeonland
  • Crusader Kings II
  • Darkest Hour
  • Stellaris Sign-up
  • Tyranny: Archon Edition
  • Crusader Kings II: Conclave
  • The Showdown Effect
  • Crusader Kings II: Horse Lords
  • Europa Universalis IV: Common Sense
  • Stellaris: Apocalypse
  • Hearts of Iron IV: Colonel
  • Pillars of Eternity
  • Hearts of Iron IV: Expansion Pass
  • Europa Universalis IV: Mandate of Heaven
  • Crusader Kings II: Way of Life
  • Europa Universalis IV: Rule Britannia
  • Europa Universalis IV: El Dorado
  • War of the Roses
  • 500k Club
  • Stellaris
  • Hearts of Iron IV: Death or Dishonor
  • Surviving Mars
  • Stellaris: Digital Anniversary Edition
  • Shadowrun: Dragonfall
  • Europa Universalis IV: Golden Century
  • Europa Universalis IV: Rights of Man
  • Stellaris: Humanoids Species Pack
  • Europa Universalis IV: Cradle of Civilization
  • Hearts of Iron IV: Cadet
  • Shadowrun Returns
  • Stellaris: Distant Stars
  • Stellaris: Leviathans Story Pack
  • Europa Universalis IV
  • BATTLETECH
  • Crusader Kings II: Reapers Due
  • Hearts of Iron IV: No Step Back
  • Europa Universalis III Complete
  • Surviving Mars: First Colony Edition
  • Europa Universalis III Complete
  • Europa Universalis IV: Dharma
Technically light cruisers have the best detection of any ship. Submarines have crappy surface detection unless you upgrade your trade interdiction to the max and even then they have less surface detection than light cruisers.
So if your only concern is detection and enemy fleets can't reach you, then light cruisers should be the best raiders in theory.

Submarines have 30, 40, 50 , 70 Surface detection.
All of them can be upgraded 50% to 100%

Light cruisers have 15 , 20 . 50 . 70 surface detection.
 

sterrius

Field Marshal
104 Badges
Jan 18, 2009
2.671
5.749
  • Cities in Motion
  • Sword of the Stars II
  • Victoria 2
  • Magicka
  • Leviathan: Warships
  • Knights of Pen and Paper +1 Edition
  • Heir to the Throne
  • Warlock 2: The Exiled
  • Divine Wind
  • Europa Universalis III Complete
  • Dungeonland
  • Crusader Kings II
  • Darkest Hour
  • Stellaris Sign-up
  • Tyranny: Archon Edition
  • Crusader Kings II: Conclave
  • The Showdown Effect
  • Crusader Kings II: Horse Lords
  • Europa Universalis IV: Common Sense
  • Stellaris: Apocalypse
  • Hearts of Iron IV: Colonel
  • Pillars of Eternity
  • Hearts of Iron IV: Expansion Pass
  • Europa Universalis IV: Mandate of Heaven
  • Crusader Kings II: Way of Life
  • Europa Universalis IV: Rule Britannia
  • Europa Universalis IV: El Dorado
  • War of the Roses
  • 500k Club
  • Stellaris
  • Hearts of Iron IV: Death or Dishonor
  • Surviving Mars
  • Stellaris: Digital Anniversary Edition
  • Shadowrun: Dragonfall
  • Europa Universalis IV: Golden Century
  • Europa Universalis IV: Rights of Man
  • Stellaris: Humanoids Species Pack
  • Europa Universalis IV: Cradle of Civilization
  • Hearts of Iron IV: Cadet
  • Shadowrun Returns
  • Stellaris: Distant Stars
  • Stellaris: Leviathans Story Pack
  • Europa Universalis IV
  • BATTLETECH
  • Crusader Kings II: Reapers Due
  • Hearts of Iron IV: No Step Back
  • Europa Universalis III Complete
  • Surviving Mars: First Colony Edition
  • Europa Universalis III Complete
  • Europa Universalis IV: Dharma
I was thinking of raiding with a country that doesn't have naval superiority, like germany. I imagine a BC with a few CLs could shred convoys and any DD escorts

Submarines are nice mostly because of range. A Sub III with speed 5 have 6250km range, enough to open your available hunt regions to make the allies go crazy.

Using BC`s alongside the subs they will kill any pure DD squad easily.

Also its 3 times the range of a DD. So as long you start cutting his acess to sea regions they can´t do anything. (Reason its important for axis to take africa).

its the main UK fleet the real threat as they can easily wipe out groups of 2 BC´s. And here is where you need to expend most dockyards, in a way to keep the UK fleet busy.
 

elitesix

Captain
84 Badges
Apr 26, 2011
395
57
  • Crusader Kings II
  • Europa Universalis IV: Mare Nostrum
  • Europa Universalis IV: Cossacks
  • Cities: Skylines - After Dark
  • Stellaris - Path to Destruction bundle
  • Warlock 2: The Exiled
  • Warlock: Master of the Arcane
  • Sword of the Stars II
  • Sword of the Stars
  • Semper Fi
  • Rome Gold
  • Europa Universalis IV: Res Publica
  • Majesty 2
  • Magicka
  • King Arthur II
  • Hearts of Iron III: Their Finest Hour
  • For the Motherland
  • Crusader Kings II: Legacy of Rome
  • Crusader Kings II: Charlemagne
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Rajas of India
  • Crusader Kings II: The Republic
  • Hearts of Iron III
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: Sunset Invasion
  • Crusader Kings II: Sword of Islam
  • Cities in Motion
  • Europa Universalis IV: Art of War
  • Europa Universalis IV: Conquest of Paradise
  • Europa Universalis IV: Wealth of Nations
  • Europa Universalis IV: Mandate of Heaven
  • Crusader Kings II: Reapers Due
  • Hearts of Iron IV: Cadet
  • Europa Universalis IV: Rights of Man
  • Tyranny: Archon Edition
  • Stellaris: Digital Anniversary Edition
  • Stellaris: Leviathans Story Pack
  • Hearts of Iron IV: Together for Victory
  • Steel Division: Normandy 44
  • Cities: Skylines - Mass Transit
  • Stellaris
  • Crusader Kings II: Conclave
  • Crusader Kings II: Horse Lords
  • Europa Universalis IV: Common Sense
  • Pillars of Eternity
  • Crusader Kings II: Way of Life
  • Europa Universalis IV: El Dorado
  • Stellaris: Necroids
  • 500k Club
  • Rome: Vae Victis
....its the main UK fleet the real threat as they can easily wipe out groups of 2 BC´s. And here is where you need to expend most dockyards, in a way to keep the UK fleet busy.

If they ever fix the barely functional naval strike air theater mission (ie, they only attack once despite days or weeks of naval battle), land-based power would be a real game changer as it was in real life. Small navies could hold their own with friendly airpower near the coast against bigger fleets.

They should also probably scrap the whole air superiority affecting carrier fighters in naval battles and simply allow land-based fighters to engage with carrier fighters as they did in real life, assuming they fix the 1 attack regardless of naval battle length bug. Then you could easily use SAGs within range of friendly land-based fighters and not die when a CTFs breathes on you.
 
Last edited:

War Emblem

Captain
12 Badges
Dec 5, 2005
390
53
  • For The Glory
  • Hearts of Iron III Collection
  • Hearts of Iron IV: Cadet
  • Hearts of Iron IV: Together for Victory
  • Hearts of Iron IV: Death or Dishonor
  • Hearts of Iron IV: Expansion Pass
  • Hearts of Iron IV: Expansion Pass
  • Hearts of Iron IV: La Resistance
  • Crusader Kings III
  • Battle for Bosporus
  • Victoria 3 Sign Up
  • Hearts of Iron IV: No Step Back
It would work, but the problem you run into whenever you use CVs for convoy raiding is the loss in planes. I'm not sure how effective it becomes as you have to keep replacing planes. If you have the production to spare it doesn't really matter but if you have to prioritize what you can afford to build the losses start to add up.
 

BaddoSpirito

General
71 Badges
Jun 11, 2014
2.377
370
  • Hearts of Iron III Collection
  • Cities: Skylines - Snowfall
  • Europa Universalis IV: Cossacks
  • Cities: Skylines - After Dark
  • Stellaris
  • Stellaris: Galaxy Edition
  • Europa Universalis IV: Pre-order
  • Cities: Skylines Deluxe Edition
  • Stellaris - Path to Destruction bundle
  • Semper Fi
  • Stellaris: Synthetic Dawn
  • Europa Universalis IV: Res Publica
  • Hearts of Iron III: Their Finest Hour
  • Hearts of Iron III
  • For the Motherland
  • Europa Universalis IV: Conquest of Paradise
  • Crusader Kings II: Charlemagne
  • Crusader Kings II: Legacy of Rome
  • Crusader Kings II: The Old Gods
  • Crusader Kings II: Rajas of India
  • Crusader Kings II: The Republic
  • Crusader Kings II: Sons of Abraham
  • Crusader Kings II: Sunset Invasion
  • Crusader Kings II: Sword of Islam
  • Europa Universalis IV: Mandate of Heaven
  • Europa Universalis III
  • Europa Universalis III Complete
  • Crusader Kings II
  • Europa Universalis IV: Art of War
  • Europa Universalis IV: Wealth of Nations
  • Europa Universalis IV: Rights of Man
  • Battle for Bosporus
  • Hearts of Iron IV: Colonel
  • Hearts of Iron IV: Cadet
  • Tyranny: Archon Edition
  • Hearts of Iron IV Sign-up
  • Tyranny: Archon Edition
  • Stellaris: Galaxy Edition
  • Stellaris: Digital Anniversary Edition
  • Europa Universalis IV: Mare Nostrum
  • Crusader Kings II: Horse Lords
  • Europa Universalis IV: Common Sense
  • Pillars of Eternity
  • Crusader Kings II: Way of Life
  • Europa Universalis IV: El Dorado
  • Cities: Skylines
  • Stellaris: Leviathans Story Pack
  • Victoria 2
  • Europa Universalis III Complete
  • Europa Universalis III Complete
There are two parts to convoy raiding. Surface detection and the rate at which you kill the convoys you catch.

For surface detection, best is submarines( at least tech 2 version ) with trade interdiction. Destroyer or light cruiser 3 or 4 are also good enough if you have air superiority in the region you are raiding.

For killing convoys quickly, submarines are the worst because they are very slow. Carriers with all naval bombers are by far the best if you have air superiority in the region. Destroyer or LC 3 or 4 with engine upgrades are good alternatives if you don't have air superiority.

You can combine ships that are good at each part to get a good raiding fleet. For example, 4x carrier, 20x submarine with trade interdiction will rape anything and everything in the region they are raiding as long as you have air superiority. The downside of such a powerful raiding fleet is that it is vulnerable to land-based naval bombing because of carriers and you should also make sure to keep an eye on it so that you don't lose the carriers if it is caught by the enemy's main fleet. Something like 5x destroyer, 10x subs is a less powerful but more expendable raiding fleet that is also quite useful. If you have focus bonus for LC or DD so you can get tech 3 or 4 version ahead of time, you can drop the subs and use 10x DD or 10x LC also.