Thence Round Cape Horn is a comprehensive and richly illustrated chronicle of the U.S. Navy's presence in the Pacific across more than a century. Naval historian Robert Erwin Johnson traces the evolution of the Pacific Station—from single‐ship missions protecting American merchant-marines in 1818 to a formidable naval force by World War I. With clarity and precision, Johnson navigates through key moments: Mexico–U.S. tensions, the California Gold Rush, Perry's Japan expedition, Civil War reassignments, and early 20th-century modernization. Framed by maps, portraits, and archival illustrations, the narrative immerses readers in shipboard life—sailors rounding Cape Horn, patrolling remote coasts, dealing with storms, and operating without established ports. Both scholarly and engaging, this book is essential for those interested in maritime history, naval logistics, and America's rise as a Pacific power.