Toying around with the idea of using missiles, heres an example of what a ship at 30kt using gas core tech would have, its 5000 tons of space to mount this between the magazine and the launcher, the launcher is a "light" MAC, aka a size 60 full reload rate missile launcher, and the magazine has enough capacity to store 10 kinetic rounds
XM1000 class Frigate (P) 30,000 tons 667 Crew 3,865.7 BP TCS 600 TH 1,800 EM 0
3000 km/s JR 3-50 Armour 5-86 Shields 0-0 HTK 138 Sensors 6/6/0/0 DCR 14-4 PPV 176.88
Maint Life 1.02 Years MSP 1,143 AFR 507% IFR 7.0% 1YR 1,093 5YR 16,402 Max Repair 600 MSP
Hangar Deck Capacity 500 tons Troop Capacity 1,000 tons Boarding Capable Magazine 1,236 / 0
Captain Control Rating 3 BRG AUX ENG
Intended Deployment Time: 12 months Flight Crew Berths 10 Morale Check Required
Shaw-Fujikawa Translight Engine M30K-3-5 Max Ship Size 30000 tons Distance 50k km Squadron Size 3
Riopel-Rimando Drive Systems K90 Fusion Drive (2) Power 1800 Fuel Use 90.00% Signature 900 Explosion 15%
Fuel Capacity 3,159,000 Litres Range 21.1 billion km (81 days at full power)
M840 Bulwark Point Defence Turret (4x6) Range 10,000km TS: 12000 km/s Power 0-0 RM 10,000 km ROF 5
Point Defence FCS (1) Max Range: 96,000 km TS: 12,000 km/s ECCM-0 90 79 69 58 48 38 27 17 6 0
M24 Defender missile pods (96) Missile Size: 6 Hangar Reload 122 minutes MF Reload 20 hours
(Light)10L6R8 Magnetic Accelerator Cannon (1) Missile Size: 60 Rate of Fire 80
MFCS-22-150 (1) Range 22.8m km Resolution 150
Mk 8 Defender ASM (96) Speed: 28,000 km/s End: 6.1m Range: 10.2m km WH: 6 Size: 6 TH: 93/56/28
XM1039 Kinetic Energy Projector Round (11) Speed: 31,333 km/s End: 0.3m Range: 0.6m km WH: 38.8 Size: 60.00 TH: 120/72/36
Cayouette Electronics AS56/R150 Radar array (1) GPS 9000 Range 56.9m km Resolution 150
Cayouette Electronics AS4/R1 Radar array (1) GPS 12 Range 4.8m km MCR 430.9k km Resolution 1
Cayouette Electronics Industries T10-60 Thermal Sensor Suite (1) Sensitivity 6 Detect Sig Strength 1000: 19.4m km
Cayouette Electronics Industries F10-60 EM Sensor Suite (1) Sensitivity 6 Detect Sig Strength 1000: 19.4m km
Strike Group / Ground Forces
1x Epoch Scout Speed: 2254 km/s Size: 9.98
4x Marine Company
At my relatively low tech level the "Missile" in question is not the most impressive but still two of them will destroy one of my current mainline frigates if they get through, i have stacked it with decoys and terminal guidance to give it the best chance it can, but of course more experimentation will be needed i have done some tests and it seems viable at actually getting through PD atleast on a localised level. also who doesnt like a 750 metric ton projectile being fired 31,333km/s towards aliens.