After the military failed to widely adopt the MSM-04 ACGUY as the aquatic mobile suit of choice, several more attempts to make a satisfactory suit for the role were presented. By far the most popular was the MSM-07 Z'Gok. Armed with 8 torpedo/rocket tubes and two heavy-duty melee claws, all complemented by a medium mobility assistance pack, the Z'Gok fit the aquatic combat role perfectly.
To maximize combat potential, the Z'Gok pilots usually avoid direct combat unless at melee range, preferring to sneak up on enemies. Most pilots rarely use the launcher tubes on enemy mobile suits, preferring to use their claws for mobile suit combat and the launchers for anything else that shows up.
While the role specificity of the Z'Gok limited it's adoption scope, many Navy and Marine units immediately saw the potential and began using them in combat scenarios. The suit is quite popular among Navy pilots especially, as the aquatic capability and increased armor contribute to much higher pilot success/survival odds at sea than there are with more traditional mobile suits.