Backstory: For those who don't know, the massive cargo holds seen on some star league ships were essentially an out of universe accident. More accurately, the stats for these ships were originally written without rules, and the later construction rules first published in battlespace had to be written around them. When this meant ships like the hilariously overgunned Black Lion alongside ships like the Soyuz or Congress, that meant the latter ships ended up with massive massive cargo holds.
So anyway, I took the most egregious examples of this phenomenon and shrank them down as much as possible, changing none of the game impacting stats except their tonnage and their cargo capacity. The results are below.
(and yes, I know there is a compelling often suggested justification for Star League ships to carry so much cargo, but that's not what this is about. This is for fun)
Vincent Corvette Mk 39c
Mass: 100,000 tons
Technology Base: Inner Sphere (Advanced)
Introduced: 2750
Mass: 100,000
Battle Value: 15,822
Tech Rating/Availability: E/E-X-E-F
Cost: 3,881,102,000 C-bills
Fuel: 500 tons (5,000)
Safe Thrust: 4
Maximum Thrust: 6
Sail Integrity: 3
KF Drive Integrity: 4
Heat Sinks: 493
Structural Integrity: 40
Armor
Nose: 16
Fore Sides: 19/19
Aft Sides: 19/19
Aft: 16
Cargo
Bay 1: Small Craft (4) 1 Door
Bay 2: Fighter (6) 2 Doors
Bay 3: Cargo (13793.0 tons) 1 Door
Ammunition:
200 rounds of NAC/10 ammunition (40 tons),
20 rounds of Barracuda ammunition (600 tons)
Dropship Capacity: 0
Grav Decks: 1 (60 m)
Escape Pods: 8
Life Boats: 0
Crew: 28 officers, 107 enlisted/non-rated, 24 gunners, 32 bay personnel
Notes: Mounts 70 tons of ferro-carbide armor.
Weapons: Capital Attack Values (Standard)
Arc (Heat) Heat SRV MRV LRV ERV Class
Nose (20 Heat)
2 Capital Missile Launcher (Barracuda) 20 4(40) 4(40) 4(40) 4(40) Capital Missile
Barracuda Ammo (20 shots)
FRS/FLS (46 Heat)
1 Naval Autocannon (NAC/10) 30 10(100) 10(100) 10(100) 0(0) Capital AC
NAC/10 Ammo (50 shots)
2 Large Laser 16 2(16) 2(16) 0(0) 0(0) Laser
RBS/LBS (46 Heat)
1 Naval Autocannon (NAC/10) 30 10(100) 10(100) 10(100) 0(0) Capital AC
NAC/10 Ammo (50 shots)
2 Large Laser 16 2(16) 2(16) 0(0) 0(0) Laser
Essex IIc Destroyer (2711)
Mass: 220,000 tons
Technology Base: Inner Sphere (Advanced)
Introduced: 2711
Mass: 220,000
Battle Value: 67,065
Tech Rating/Availability: E/E-X-E-F
Cost: 4,588,386,800 C-bills
Fuel: 600 tons (3,000)
Safe Thrust: 3
Maximum Thrust: 5
Sail Integrity: 4
KF Drive Integrity: 6
Heat Sinks: 746 (1492)
Structural Integrity: 60
Armor
Nose: 37
Fore Sides: 37/37
Aft Sides: 37/35
Aft: 37
Cargo
Bay 1: Fighter (6) 2 Doors
Bay 2: Small Craft (4) 2 Doors
Bay 3: Cargo (11135.0 tons) 1 Door
Ammunition:
240 rounds of NAC/20 ammunition (96 tons),
30 rounds of Barracuda ammunition (900 tons)
Dropship Capacity: 0
Grav Decks: 1 (55 m)
Escape Pods: 6
Life Boats: 6
Crew: 35 officers, 142 enlisted/non-rated, 31 gunners, 32 bay personnel
Notes: Mounts 231 tons of improved ferro-aluminum armor.
Weapons: Capital Attack Values (Standard)
Arc (Heat) Heat SRV MRV LRV ERV Class
Nose (120 Heat)
2 Naval Autocannon (NAC/20) 120 40(400) 40(400) 40(400) 0(0) Capital AC
NAC/20 Ammo (40 shots)
FRS/FLS (190 Heat)
3 Naval Autocannon (NAC/20) 180 60(600) 60(600) 60(600) 0(0) Capital AC
NAC/20 Ammo (60 shots)
1 Capital Missile Launcher (Barracuda) 10 2(20) 2(20) 2(20) 2(20) Capital Missile
Barracuda Ammo (10 shots)
RBS/LBS (374 Heat)
2 Naval Laser 35 104 7(70) 7(70) 7(70) 0(0) Capital Laser
2 Naval PPC (Medium) 270 18(180) 18(180) 18(180) 18(180) Capital PPC
ARS/ALS (374 Heat)
2 Naval Laser 35 104 7(70) 7(70) 7(70) 0(0) Capital Laser
2 Naval PPC (Medium) 270 18(180) 18(180) 18(180) 18(180) Capital PPC
Aft (250 Heat)
3 Naval Autocannon (NAC/20) 180 60(600) 60(600) 60(600) 0(0) Capital AC
NAC/20 Ammo (40 shots)
1 Naval Autocannon (NAC/20) 60 20(200) 20(200) 20(200) 0(0) Capital AC
NAC/20 Ammo (40 shots)
1 Capital Missile Launcher (Barracuda) 10 2(20) 2(20) 2(20) 2(20) Capital Missile
Barracuda Ammo (10 shots)
Lola IIIc Destroyer (2662)
Mass: 330,000 tons
Technology Base: Inner Sphere (Advanced)
Introduced: 2662
Mass: 330,000
Battle Value: 65,874
Tech Rating/Availability: E/E-X-E-F
Cost: 5,055,160,600 C-bills
Fuel: 1,200 tons (3,000)
Safe Thrust: 4
Maximum Thrust: 6
Sail Integrity: 4
KF Drive Integrity: 8
Heat Sinks: 742 (1484)
Structural Integrity: 50
Armor
Nose: 48
Fore Sides: 48/48
Aft Sides: 48/48
Aft: 48
Cargo
Bay 1: Fighter (6) 1 Door
Bay 2: Small Craft (4) 1 Door
Bay 3: Cargo (26976.5 tons) 1 Door
Ammunition:
400 rounds of NAC/10 ammunition (80 tons),
20 rounds of White Shark ammunition (800 tons),
50 rounds of Barracuda ammunition (1,500 tons)
Dropship Capacity: 0
Grav Decks: 0
Escape Pods: 8
Life Boats: 0
Crew: 38 officers, 143 enlisted/non-rated, 39 gunners, 32 bay personnel
Notes: Mounts 322.5 tons of ferro-carbide armor.
Weapons: Capital Attack Values (Standard)
Arc (Heat) Heat SRV MRV LRV ERV Class
Nose (170 Heat)
2 Naval Laser 55 170 11(110) 11(110) 11(110) 11(110) Capital Laser
FRS/FLS (270 Heat)
3 Naval Laser 55 255 17(165) 17(165) 17(165) 17(165) Capital Laser
1 Capital Missile Launcher (White Shark) 15 3(30) 3(30) 3(30) 3(30) Capital Missile
White Shark Ammo (10 shots)
RBS/LBS (210 Heat)
4 Naval Autocannon (NAC/10) 120 40(400) 40(400) 40(400) 0(0) Capital AC
NAC/10 Ammo (100 shots)
1 Naval Laser 45 70 5(45) 5(45) 5(45) 5(45) Capital Laser
2 Capital Missile Launcher (Barracuda) 20 4(40) 4(40) 4(40) 4(40) Capital Missile
Barracuda Ammo (20 shots)
ARS/ALS (190 Heat)
4 Naval Autocannon (NAC/10) 120 40(400) 40(400) 40(400) 0(0) Capital AC
NAC/10 Ammo (100 shots)
1 Naval Laser 45 70 5(45) 5(45) 5(45) 5(45) Capital Laser
Aft (350 Heat)
4 Naval Laser 55 340 22(220) 22(220) 22(220) 22(220) Capital Laser
1 Capital Missile Launcher (Barracuda) 10 2(20) 2(20) 2(20) 2(20) Capital Missile
Barracuda Ammo (10 shots)
Congress-c Frigate
Mass: 330,000 tons
Use: Convoy Escort/Reconnaissance
Technology Base: Inner Sphere (Advanced)
Introduced: 2570
Mass: 330,000
Battle Value: 65,773
Tech Rating/Availability: E/E-X-E-F
Cost: 6,688,373,000 C-bills
Dimensions
Length: 703 m
Fuel: 2,000 tons (5,000)
Safe Thrust: 3
Maximum Thrust: 5
Sail Integrity: 4
KF Drive Integrity: 8
Heat Sinks: 604 (1208)
Structural Integrity: 75
Armor
Nose: 75
Fore Sides: 72/72
Aft Sides: 72/72
Aft: 75
Cargo
Bay 1: Fighter (6) 1 Door
Bay 2: Small Craft (4) 1 Door
Bay 3: Cargo (47233.5 tons) 1 Door
Ammunition:
420 rounds of NAC/10 ammunition (84 tons),
10 rounds of Killer Whale ammunition (500 tons),
20 rounds of White Shark ammunition (800 tons),
100 rounds of NAC/30 ammunition (80 tons)
Dropship Capacity: 2
Grav Decks: 1 (90 m)
Escape Pods: 8
Life Boats: 8
Crew: 43 officers, 192 enlisted/non-rated, 21 gunners, 32 bay personnel
Notes: Mounts 487.5 tons of ferro-carbide armor.
Weapons: Capital Attack Values (Standard)
Arc (Heat) Heat SRV MRV LRV ERV Class
Nose (20 Heat)
1 Capital Missile Launcher (Killer Whale) 20 4(40) 4(40) 4(40) 4(40) Capital Missile
Killer Whale Ammo (10 shots)
FRS/FLS (60 Heat)
2 Naval Autocannon (NAC/10) 60 20(200) 20(200) 20(200) 0(0) Capital AC
NAC/10 Ammo (70 shots)
RBS/LBS (91 Heat)
2 Naval Autocannon (NAC/10) 60 20(200) 20(200) 20(200) 0(0) Capital AC
NAC/10 Ammo (70 shots)
2 Large Laser 16 2(16) 2(16) 0(0) 0(0) Laser
1 Capital Missile Launcher (White Shark) 15 3(30) 3(30) 3(30) 3(30) Capital Missile
White Shark Ammo (10 shots)
ARS/ALS (176 Heat)
1 Naval Autocannon (NAC/30) 160 50(500) 50(500) 50(500) 0(0) Capital AC
2 Naval Autocannon (NAC/10)
NAC/10 Ammo (70 shots)
NAC/30 Ammo (25 shots)
2 Large Laser 16 2(16) 2(16) 0(0) 0(0) Laser
Aft (200 Heat)
2 Naval Autocannon (NAC/30) 200 60(600) 60(600) 60(600) 0(0) Capital AC
NAC/30 Ammo (50 shots)
Sovetskii Soyuz-c Heavy Cruiser
Mass: 470,000 tons
Technology Base: Inner Sphere (Advanced)
Introduced: 2742
Mass: 470,000
Battle Value: 76,180
Tech Rating/Availability: E/E-X-E-F
Cost: 8,952,151,200 C-bills
Fuel: 1,400 tons (3,500)
Safe Thrust: 2
Maximum Thrust: 3
Sail Integrity: 4
KF Drive Integrity: 11
Heat Sinks: 1075 (2150)
Structural Integrity: 80
Armor
Nose: 74
Fore Sides: 88/88
Aft Sides: 88/88
Aft: 68
Cargo
Bay 1: Fighter (18) 4 Doors
Bay 2: Small Craft (8) 2 Doors
Bay 3: Cargo (79396.5 tons) 1 Door
Ammunition:
20 rounds of Killer Whale ammunition (1,000 tons),
1,200 rounds of NAC/20 ammunition (480 tons),
40 rounds of Barracuda ammunition (1,200 tons)
Dropship Capacity: 4
Grav Decks: 2 (55 m, 90 m)
Escape Pods: 20
Life Boats: 0
Crew: 44 officers, 167 enlisted/non-rated, 50 gunners, 76 bay personnel
Notes: Mounts 743.5 tons of improved ferro-aluminum armor.
Weapons: Capital Attack Values (Standard)
Arc (Heat) Heat SRV MRV LRV ERV Class
Nose (40 Heat)
2 Capital Missile Launcher (Killer Whale) 40 8(80) 8(80) 8(80) 8(80) Capital Missile
Killer Whale Ammo (20 shots)
FRS/FLS (850 Heat)
12 Naval Laser 45 840 54(540) 54(540) 54(540) 54(540) Capital Laser
1 Capital Missile Launcher (Barracuda) 10 2(20) 2(20) 2(20) 2(20) Capital Missile
Barracuda Ammo (10 shots)
RBS/LBS (450 Heat)
3 Naval Autocannon (NAC/20) 180 60(600) 60(600) 60(600) 0(0) Capital AC
NAC/20 Ammo (300 shots)
2 Naval PPC (Medium) 270 18(180) 18(180) 18(180) 18(180) Capital PPC
ARS/ALS (460 Heat)
3 Naval Autocannon (NAC/20) 180 60(600) 60(600) 60(600) 0(0) Capital AC
NAC/20 Ammo (300 shots)
2 Naval PPC (Medium) 270 18(180) 18(180) 18(180) 18(180) Capital PPC
1 Capital Missile Launcher (Barracuda) 10 2(20) 2(20) 2(20) 2(20) Capital Missile
Barracuda Ammo (10 shots)
Cameron-c Battlecruiser
Mass: 550,000 tons
Technology Base: Inner Sphere (Advanced)
Introduced: 2688
Mass: 550,000
Battle Value: 119,950
Tech Rating/Availability: E/E-X-E-F
Cost: 8,029,975,000 C-bills
Fuel: 1,000 tons (2,500)
Safe Thrust: 2
Maximum Thrust: 3
Sail Integrity: 4
KF Drive Integrity: 12
Heat Sinks: 2430 (4860)
Structural Integrity: 80
Armor
Nose: 120
Fore Sides: 128/128
Aft Sides: 128/128
Aft: 118
Cargo
Bay 1: Small Craft (2) 2 Doors
Bay 2: Fighter (16) 4 Doors
Bay 3: Cargo (80369.5 tons) 1 Door
Ammunition:
32 rounds of AR10 Killer Whale ammunition (1,600 tons),
200 rounds of NAC/25 ammunition (120 tons),
24 rounds of AR10 Barracuda ammunition (720 tons),
24 rounds of AR10 White Shark ammunition (960 tons)
Dropship Capacity: 2
Grav Decks: 2 (75 m, 75 m)
Escape Pods: 30
Life Boats: 20
Crew: 48 officers, 193 enlisted/non-rated, 46 gunners, 42 bay personnel
Notes: Mounts 877.5 tons of ferro-carbide armor.
Weapons: Capital Attack Values (Standard)
Arc (Heat) Heat SRV MRV LRV ERV Class
Nose (450 Heat)
2 Naval PPC (Heavy) 450 30(300) 30(300) 30(300) 30(300) Capital PPC
FRS/FLS (490 Heat)
2 Capital Missile Launcher (AR10 Launcher) 40 4(40) 4(40) 4(40) 4(40) AR10
AR10 Barracuda Ammo (6 shots)
AR10 Killer Whale Ammo (8 shots)
AR10 White Shark Ammo (6 shots)
2 Naval PPC (Heavy) 450 30(300) 30(300) 30(300) 30(300) Capital PPC
RBS/LBS (496 Heat)
2 Naval Autocannon (NAC/25) 170 50(500) 50(500) 50(500) 0(0) Capital AC
NAC/25 Ammo (25 shots)
2 Naval Autocannon (NAC/25) 170 50(500) 50(500) 50(500) 0(0) Capital AC
NAC/25 Ammo (25 shots)
3 Naval Laser 35 156 11(105) 11(105) 11(105) 0(0) Capital Laser
ARS/ALS (1,000 Heat)
2 Naval Autocannon (NAC/25) 170 50(500) 50(500) 50(500) 0(0) Capital AC
NAC/25 Ammo (25 shots)
2 Naval Autocannon (NAC/25) 170 50(500) 50(500) 50(500) 0(0) Capital AC
NAC/25 Ammo (25 shots)
2 Naval Laser 55 170 11(110) 11(110) 11(110) 11(110) Capital Laser
2 Capital Missile Launcher (AR10 Launcher) 40 4(40) 4(40) 4(40) 4(40) AR10
AR10 Barracuda Ammo (6 shots)
AR10 Killer Whale Ammo (8 shots)
AR10 White Shark Ammo (6 shots)
2 Naval PPC (Heavy) 450 30(300) 30(300) 30(300) 30(300) Capital PPC
Aft (450 Heat)
2 Naval PPC (Heavy) 450 30(300) 30(300) 30(300) 30(300) Capital PPC
Texas-c Battleship
Mass: 1,050,000 tons
Technology Base: Inner Sphere (Advanced)
Introduced: 2618
Mass: 1,050,000
Battle Value: 118,217
Tech Rating/Availability: E/E-X-E-F
Cost: 13,750,717,200 C-bills
Fuel: 1,400 tons (3,500)
Safe Thrust: 3
Maximum Thrust: 5
Sail Integrity: 6
KF Drive Integrity: 22
Heat Sinks: 2825 (5650)
Structural Integrity: 85
Armor
Nose: 234
Fore Sides: 342/342
Aft Sides: 342/342
Aft: 234
Cargo
Bay 1: Fighter (40) 6 Doors
Bay 2: Small Craft (16) 2 Doors
Bay 3: Cargo (159761.0 tons) 1 Door
Ammunition:
150 rounds of NAC/40 ammunition (180 tons),
40 rounds of AR10 Barracuda ammunition (1,200 tons),
40 rounds of Killer Whale ammunition (2,000 tons),
40 rounds of AR10 White Shark ammunition (1,600 tons)
Dropship Capacity: 6
Grav Decks: 3 (95 m, 65 m, 55 m)
Escape Pods: 20
Life Boats: 35
Crew: 117 officers, 507 enlisted/non-rated, 78 gunners, 160 bay personnel
Notes: Mounts 1,782 tons of lamellor ferro-carbide armor.
Weapons: Capital Attack Values (Standard)
Arc (Heat) Heat SRV MRV LRV ERV Class
FRS/FLS (1,075 Heat)
4 Naval PPC (Heavy) 900 60(600) 60(600) 60(600) 60(600) Capital PPC
2 Capital Missile Launcher (Killer Whale) 40 8(80) 8(80) 8(80) 8(80) Capital Missile
Killer Whale Ammo (20 shots)
1 Naval Autocannon (NAC/40) 135 40(400) 40(400) 0(0) 0(0) Capital AC
NAC/40 Ammo (75 shots)
RBS/LBS (880 Heat)
12 Naval Laser 45 840 54(540) 54(540) 54(540) 54(540) Capital Laser
2 Capital Missile Launcher (AR10 Launcher) 40 4(40) 4(40) 4(40) 4(40) AR10
AR10 Barracuda Ammo (10 shots)
AR10 White Shark Ammo (10 shots)
ARS/ALS (1,780 Heat)
12 Naval Laser 45 840 54(540) 54(540) 54(540) 54(540) Capital Laser
2 Capital Missile Launcher (AR10 Launcher) 40 4(40) 4(40) 4(40) 4(40) AR10
AR10 Barracuda Ammo (10 shots)
AR10 White Shark Ammo (10 shots)
4 Naval PPC (Heavy) 900 60(600) 60(600) 60(600) 60(600) Capital PPC