tests. VH-34C Staff transport conversions of CH-34C. HH-34D Designation applied to aircraft given USAF serials to be transferred under MAP and MDAP. LH-34D HUS-1L re-designated in 1962 UH-34D HUS-1 re-designated in 1962 and 54 new build. VH-34D HUS-1Z re-designated in 1962 UH-34E HUS-1A re-designated in 1962 HH-34F HUS-1G re-designated in 1962 YSH-34G YHSS-1 re-designated in 1962 SH-34G HSS-1 re-designated in 1962 SH-34H HSS-1F re-designated in 1962 YSH-34J YHSS-1N re-designated in 1962 SH-34J HSS-1N re-designated in 1962 UH-34J SH-34J without ASW equipment for cargo and training purposes. HH-34J Ex-USN UH-34Js operated by the U.S. Air Force VH-34J Staff transport conversions of SH-34J. XHSS-1 Seabat Three Sikorsky S-58s for evaluation by the U.S. Navy, re-designated YHSS-1 then YSH-34G in 1962. HSS-1 Seabat Production Anti-Submarine model for the U.S. Navy, re-designated SH-34G in 1962, 215 built HSS-1F Seabat One HSS-1 re-engined with two YT-58-GE as a flying test bed, re-designated SH-34H in 1962. YHSS-1N Seabat One HSS-1 converted as the HSS-1N prototype, re-designated YSH-34J in 1962. HSS-1N Seabat Night/Bad weather version of the HSS-1 with improved avionics and autopilot, re-designated SH-34J in 1962, 167 built (an addition 75 HSS-1 airframes were built to CH-34C standard for West Germany). HUS-1 Seahorse Utility transport version of the HSS-1 for the U.S. Marine Corps, re-designated UH-34D in 1962, 462 built HUS-1A Seahorse Forty HUS-1s fitted with amphibious pontoons, re-designated UH-34E in 1962. HUS-1G Seahorse United States Coast Guard version of the HUS-1, re-designated HH-34F in 1962, six built. HUS-1L Seahorse Four HUS-1s converted for Antarctic operations with VXE-6, re-designated LH-34D in 1962. HUS-1Z Seahorse Seven HUS-1s fitted with VIP interior for the Executive Flight Detachment, re-designated VH-34D in 1962. CH-126 Canadian military designation for the S-58B. S-58A Commercial designation for basic cargo variant, certified in 1956 S-58B Commercial designation for improved cargo variant, certified in 1956 S-58C Commercial passenger transport/airliner version, certified in 1956 S-58D Commercial airliner/freighter version, certified in 1961 S-58E Certified in 1971 S-58F Certified in 1972 an increased maximum weight variant of the S-58B. S-58G Certified in 1972 an increased maximum weight variant of the S-58C. S-58H Certified in 1972 an increased maximum weight variant of the S-58D. S-58J Certified in 1972 an increased maximum weight variant of the S-58E S-58T Commercial conversion to turboshaft power using Pratt & Whitney Canada PT6T-3 Twin-Pac turboshaft with special nose cowling featuring distinctive twin rectangular air intakes, designations relate to original model: S-58BT Turboshaft-powered conversion of