the four-hundred-forty-foot sidewheeler was luxury itself , with enough electric light wires to stretch from providence to boston , a powerful new double-inclined engine capable of moving smartly at twenty-plus knots , steam-heated staterooms for those who could afford them , a vast quarter-deck floored with tile and trimmed in marble , and a lavishly appointed and brilliantly illuminated grand saloon carpeted in the trademark red and gold pattern of the fall river line .