Because the Dreadnought is already "advanced" technology (i.e., 1906), I will not entertain dreadnoughts faster than the HMS Dreadnought.
Naval convoys move at the speed of their slowest member ship class.
Dreadnought: HMS Dreadnought, 21 knots. Ship’s complement: 700-810.
https://en.wikipedia.org/wiki/HMS_Dreadnought_(1906). No improvements on this this technology is allowed until RP year 1915.
Troop Transport: USAT Thomas, 14 knots. Ship's complement: 100.
Capacity: 1200 troops, 1000 horses, refrigerated storage for 1,000 pounds (450kg) of meat.
Submarine: USS Holland 6 knots surfaced (subject to detection), 5.5 knots submerged. Player must specify whether the ship is traveling underwater or surfaced. Ship’s complement: 6
Battleship:HMS Bulwark 18 knots. Ship’s complement: 714
Cruiser: USS New Orleans 20 knots. Ship’s complement: 366
Gunboat: USS Isla de Luzon, 16 knots. Ship’s complement: 137
Monitor:: USS Monterey 13.6 knots. Ship’s complement: 210
Destroyer:: HMS Cygnet 30 knots. Ship’s complement: 65
Armed Yacht: USS Aphrodite 15 knots. Ship's complement: 68.