"When scientists discovered that high-warp travel wore out the barrier between space and subspace, Starfleet had prohibited anything faster than warp five."
"ArinexStar system within a couple of days high-warp transit from Starbase 47."
"Unlike the serene slipstream voyage out from Arcturus, the high-warp voyage to Mu Arae was giving the da Vinci a thorough shaking."