Thought I could add some flavour while happy with discussion and decision.
Real life CW had the destroyers and a couple of cruisers to do this. During Siege of Tobruk Australian and Royal Navy Destroyers mostly transported 30,000 + troops at about 200 troops per destroyer, mostly at night after first few weeks, and always under constant Axis bombing. Axis even used fake coastal lights to lure destroyers into wrong place. Under blackout Tobruk used 2 flat covered lights to mark the harbour at night. No GPS. On axis side www.goinlocal.co.uk/html/charlies_war_part_2.html is a neat comment on use of boats going back from benghazi.
The whole of 30.5 and 55.3 is a bit wacky as stated. Oddly the first errata said it was not good and the second set of errata basically said the chart is right the case is wrong a couple of times. The chart (55.3) itself says " the stacking points handled and tonnage handled by a port have no effect on each other; and that replacement points shipped by an Axis Naval Convoy are offloaded by the stacking point schedule, not the maximum tonnage schedule " There are also comments in the errata like 30.57 "For ports with 1 SP maximum, shipping supplies has no effect." I recommend take their lead - say the chart is correct. Supplies and SP's have no impact on each other. That is how I have played in games before. The only change to Mike's work above is minor.
I also need sheets for railways, Naval transport and Navy ships as the CW. I put together the following sheets but do not know where to put them to get some fixup and implementation. I also do not know how to load them to here?
Recommend Mike's summary, simplified even further. Clearly the designers tried about 3 models before the final chart version. Having used this version in games I can recommend forget the complexity.
[30.55] To be transferred, each unit must start the Operations Phase in its port of embarkation. Units to be transferred cannot voluntarily expend any Capability Points during the Phases prior to the Truck Convoy Segment. During the Truck Convoy Segment, each unit is transported to its destination port and, upon arrival, it must disembark. Disembarking has a Capability Point cost equal to the unit's CPA. If, for any reason, the cost of disembarking causes a unit to exceed its CPA (such as for a unit which has undergone barrage/bombardment; it may still be transferred), see case [6.21]. Note: Breakdown [21.0] does not apply to disembarkation.
[30.57] Ports have limited capacities (see Chart [55.3]), As per chart off-loading of supplies does not impact Troops debarking [see 55.55].
[55.15] Ports have limited capacities (see Chart [55.3]). Concurrent off-loading of troops will not limit the off-loading of supplies and vice-versa. For details, see [55.55].
[55.55] Ports have limited capacities (see Chart [55.3]).Concurrent off-loading of troops (see [30.5]) will not limit the off-loading of Coastal Shipping supplies and vice-versa. Round tonnage fractions up to the nearest ton when efficiency drops.