Hi Roadrunner,
if you want the Mi-8 to land on Ships, you have to add the ability to the helicopter script file.
It's the "Mi-8MT.lua" in scripts/database/helicopters. You can add this to all helis.
LandRWCategories =
{
[1] =
{
Name = "AircraftCarrier",
}, -- end of [1]
[2] =
{
Name = "HelicopterCarrier",
}, -- end of [2]
}, -- end of LandRWCategories
TakeOffRWCategories =
{
[1] =
{
Name = "AircraftCarrier",
}, -- end of [1]
[2] =
{
Name = "HelicopterCarrier",
}, -- end of [2]
}, -- end of TakeOffRWCategories
or take this file.