Warship Transit Time: San Diego to Persian Gulf — 30–45 Days

A U.S. Navy warship transiting from San Diego to the Persian Gulf typically requires 30–45 days underway, depending on route, speed, and operational requirements.

Primary Route: Great Circle (Pacific–Indian Ocean)

• Distance: ~12,000 nautical miles
• Track: San Diego → Hawaii (optional stop) → Guam (optional) → Singapore/Strait of Malacca → Indian Ocean → Strait of Hormuz → Persian Gulf
• Transit time @ 20 kts: 25 days steaming + 3–5 days stops = 28–32 days
• Transit time @ 15 kts (economy): 33 days steaming + stops = 35–40 days

Alternative: Panama Canal Route

• Distance: ~13,500 nm
• Track: San Diego → Panama Canal (1 day transit) → Caribbean → Atlantic → Mediterranean → Suez Canal (1 day) → Red Sea → Bab el-Mandeb → Gulf of Aden → Arabian Sea → Strait of Hormuz
• Time: 40–45 days (canal fees ~$400K; scheduling constraints)

Operational Variables

• Ship class: Carrier (30+ kts) vs. Amphib (20 kts) vs. Destroyer (30+ kts) vs. LCS (40+ kts)
• Mission: Deployment (direct) vs. Exercise/port visits (circuitous)
• Logistics: UNREP (underway replenishment) every 3–5 days — dictates speed
• Threat environment: Houthi missile/drone threat (Red Sea/Bab el-Mandeb) may require escort, speed changes, route deviation
• Weather: Typhoon season (W. Pac, May–Nov); Monsoon (Indian Ocean, Jun–Sep)

Typical Deployment Cycle

San Diego → (7th Fleet AOR: Japan/Philippines) → (5th Fleet AOR: Bahrain/Gulf) = 7–9 month deployment. The San Diego → Gulf leg is just the first ~month.

Submarines: Classified routes, typically faster submerged transit, no Suez (Strait of Gibraltar → Med → Suez submerged rare).