Original sentence: Other important requirements are long maintenance periods: It should be possible to deploy F125 class frigates for up to two years away from homeports with an average sea operation time of more than 5,000 hours per year (that's nearly 60%)
Edited sentence: Other important requirements are long maintenance periods: It should be possible to deploy F125 class frigates for up to two years away from homeports with an average sea operation time of more than 5,000 hours per year (that's nearly 60%) which includes operation under tropical conditions.The F125 vessels are equipped with ten guns for defence against air attack and also land attack.The vessels are also armed with non-lethal weapons, such as water cannons and searchlights for non-provocative deterrence and defence