Scuba Lawyer
Contributor
I have a 19' center-console Nautica RHIB with an older 135 hp two-stroke Mercury outboard. We can take a maximum of 4 divers with two sets of tanks each sort of comfortably. Three divers is even more comfortable. Instead of a boarding ladder (none of which I found worked very well) we set it up so you take off your tank in the water, tie it off on a line, then swim to the stern. We take our fins off then step up on the anti-cavitation plate on the motor. The next step is onto a fiberglass platform, then over the folded-down rear seat. Works really well and both of my boat partners are age 75 and 70 and they have no issues boarding that way.