Great and important question, especially with such a large bank.
Most of the modern chargers have the ability to remotely monitor
the battery terminal voltage rather than measuring the charge voltage at the chargers terminals. If the difference between the terminal voltage on the charger
and the "voltage sense" wires becomes too large these chargers will declare an error and self protect to avoid doing something evil (i.e. the sense wire gets disconnected so the charger
thinks the voltage is too low and keeps increasing the voltage to try and get the sense wire up to the desired voltage).
You can charge this bank at as much as 350 amps which would require ~6000 watts or a 50Amp at 120v shore circuit. You don't have to charge this fast but that is the maximum limit.
A small charger may exceed its internal time outs for bulk or absorption mode and assume there is something wrong and turn off. Make sure that the charger is either large enough OR that the timeouts are defeatable. (Often these are something like 10 hours). As an example, if you are 50% discharged then 870ah plus inefficiencies so perhaps 1000ah need to be replaced. With a 50 amp charger this would take at least 20 hours. If the bank does not get to 14.8v within 10 hours some chargers will kick out with an error assuming a bad battery and trying to avoid thermal run-away (yes thermal run-away is possible in a wet cell, boiling the acid and making a mess)
Also note that for equalization
you will either need a large charger OR unique programming OR the ability to equalize parts
of the bank at a time. I don't know what the recommended equalization
rate for L16's is but if it is 8% of the capacity is required to equalize that would be 150amps @ 16V which is a pretty large charger.
I have been extremely happy with the Victron Skylla-I charger I installed on Botany Bay. Very small and very powerful (100 amps @ 24V in a ~12lbs package). However, it appears you are running a 12V system and these are only available as 24V models.
Victron's Pheonix line goes to 50 amps with a microprocessor control like the Skylla-i. At least on my system, the "storage mode" is wonderful. After a full charge it drops the voltage a bit to reduce water consumption
and provides all of the house loads (I am a liveaboard
also). These chargers are impressive in that even with the inverter
kicking in and consuming 50-80% of the charger capacity the voltage never drops and the voltage remains in storage
Once per week the voltage is brought back up to absorption levels (14.8 in your case) if it has not happened for other reasons to keep the batteries topped up.
Also, for world cruising you want a charger with "universal input", these chargers operate on 90v to 265v and will work with 50hz or 60hz power without an issue. So, just plug
it into shore power
and charge pretty much anywhere on the planet.
I would check with Victron with regard to paralleling more than one of these chargers. I don't see any reason it would not work correctly but they would not know about each other and so one of the chargers might decide to go from bulk to absorption or absorption to float a bit earlier. Nothing bad will happen just that one might drop out of float more quickly or get confused about if it can stay in storage
There is also the "Centaur" range of chargers which are not computer controlled, do not have "storage mode", and so may be more easily paralleled. These chargers are also "universal input" (90v - 265v / 50hz or 60hz) and are available in up to 100amps at 12v. These are also heavier chargers.
I am just a very happy user of Victron equipment
, no ties to the company or any distributor. I am sure there are many other options, these are the ones which I have looked into recently for my system.