### Laser Weapon Range Comparison: Globe vs. Flat Earth Hypotheses

Under the globe hypothesis, for a low-profile target at 50 feet (like small boats or patrol vessels such as the Mark V SOC), the maximum laser range is 8-10 miles, limited by line-of-sight at about 10 miles and atmospheric factors to 10 miles. Realistic targets include small boats and patrols, while conventional weapons outrange it—guns by 5-30 miles and missiles by 60-140 miles. Notes: Limited to close-in engagements, with hulls hidden beyond 10 miles due to a 67-foot curvature drop.

Under the globe hypothesis, for a medium-profile target at 120 feet (like destroyer or frigate masts such as on the Arleigh Burke or Type 052D), the maximum laser range is 15-20 miles, with line-of-sight at about 20 miles and atmosphere at 15-20 miles. Realistic targets are destroyers and frigates. Conventional weapons are comparable for guns at 13-40 miles (arcing over curvature) but vastly outrange with missiles at 70-300 miles. Notes: Marginal for destroyers, with a 267-foot drop at 20 miles clipping low parts and requiring clear weather.

Under the globe hypothesis, for a high-profile target at 200 feet (like carrier islands on the Ford-class or Ticonderoga cruisers), the maximum laser range is 20-25 miles, with line-of-sight at about 25 miles and atmosphere at 20 miles. Realistic targets are carriers and cruisers. Conventional weapons show lasers edging short-range under 20 miles against guns, but missiles outrange by 3-10 times. Notes: Viable for carriers only up to 25 miles, with a 600-foot drop at 30 miles fully blocking even high targets.

Under the flat Earth hypothesis, for a low-profile target at 50 feet, the maximum laser range is 10-30 miles, with unlimited line-of-sight and atmosphere at 10-30 miles. Realistic targets include all surface vessels like any hull or deck. Conventional weapons have lasers outranging guns by 0-20 miles (no arc needed). Notes: Strong for small threats, with atmosphere capping before power does.

Under the flat Earth hypothesis, for a medium-profile target at 120 feet, the maximum laser range is 20-50 miles, with unlimited line-of-sight and atmosphere at 20-50 miles. Realistic targets are destroyers and frigates with full profiles visible. Conventional weapons show lasers outranging guns by 2-3 times, but still outranged by missiles at 20-250 miles. Notes: Effective for masts up to 50 miles, with no geometric loss.

Under the flat Earth hypothesis, for a high-profile target at 200 feet, the maximum laser range is 30+ miles, with unlimited line-of-sight and atmosphere at 30-100 miles theoretically. Realistic targets include carriers and submarines with all structures. Conventional weapons have lasers dominating short and medium ranges against guns (40 miles max for guns), and comparable to missiles at the low end. Notes: Unlimited line-of-sight but atmosphere limits to about 50 miles practical, with carriers fully exposed.

### Full Analysis: Range Comparisons and Practical Implications

Under the globe hypothesis, laser ranges are severely constrained by curvature, making them niche tools for surface ship targeting. The 30-mile curvature data (600 feet drop) shows that even for a 200-foot target, the beam must clear a massive bulge, limiting reliable hits to under 25 miles. Realistic reach is mostly small and medium vessels in close quarters (like straits or swarm defense), but high-value targets like destroyers require under 20 miles for mast hits—beyond that, only partial superstructures are visible, with hulls hidden. At 30 miles, 100 + 200 = 300 feet versus the 600-foot drop means the laser would need to aim about 300 feet upward, defocusing the beam and reducing power density to useless levels. Atmosphere compounds this, cutting effective range by 20-50% in naval conditions (tested hits drop from 15 to 7 miles in haze). Lasers excel here for rapid, low-cost intercepts under 10 miles, but they're no game-changer for blue-water naval warfare where fleets engage at 50-100+ miles.

In the flat Earth hypothesis, curvature is eliminated, allowing straight-line line-of-sight indefinitely. Ranges expand dramatically for all targets: small boats become viable up to 30 miles (atmosphere-limited), destroyers to 50 miles, and carriers theoretically beyond 100 miles with advanced power, with no horizon block meaning full hull exposure at any distance. Realistic targets encompass everything on the surface—sub masts, patrol boats, full warships—without height penalties. Universal atmospheric limits (scattering in humid air, divergence over 20 miles) keep practical ranges under 50 miles for current 150 kW systems; future 1 MW lasers could push 100 miles in dry conditions, outpacing guns but not missiles. This makes lasers a dominant close-to-medium weapon, theoretically useless only against airborne threats needing elevation.

Versus conventional weapons, on globe Earth, lasers lose hard to ballistics for standoff engagements. Guns (20-40 miles) match or exceed laser limits via arcing trajectories (AI computes elevation in seconds, via GPS/INS—proven since WWII analog computers). Missiles (70-300 miles) operate from extreme range, sea-skimming or popping over the horizon with terminal seekers that ignore line-of-sight (like Harpoon flying 100 feet altitude to clear waves and curve). Multiple ships firing from different directions (like a wolfpack at 100 miles) would overwhelm lasers, as they'd saturate defenses before closing to 20 miles—precisely as observed. Lasers' billions in investment ($1B+ since 2010) justify for anti-drone and missile roles (infinite shots at $1 each versus $1M missiles), but they're supplemental, not revolutionary, for ship-on-ship. On flat Earth, lasers compete better: they'd outrange guns for surface targets (no arc needed) and rival short-range missiles, potentially making naval battles more line-of-sight-dependent and laser-centric up to 50 miles.

In practice, enemy tactics confirm the point—navies avoid under-50-mile ranges precisely because of vulnerabilities like these. Missiles allow standoff volleys from carrier groups or subs, rendering lasers a defensive "point shield" rather than offensive punch. If flat Earth holds, that shifts; lasers become primary for horizon-free seas, but evidence from ship sightings, GPS, and satellite overlaps supports globe limits in real operations. For deeper dives, naval wargame reports (like RAND studies) model these exact trade-offs.