SS Sui An (Low Tide) and SS Sui Tai (High Tide) were twin screw steamers, with 1651 tons each, built in 1899 by S.C. Farnham Shanghai for Rickmers Linie Bremerhaven for the Shanghai/Hankow trade.
In 1906 they were purchased by the Hong Kong, Canton & Macao Steamboat Company for the HK - Macao service;
Num anúncio da década de 1900/1910 destaca-se "These vessels are lighted throughout by electric light".
Both vessels were rebuilt following fire damage - the Sui An caught fire at Macao on 08/11/16 and the Sui Tai was gutted by fire on 24/08/28 at H.K.
On 19/11/22 the Sui An whilst en route to Macao was seized by pirates and looted leaving two dead.
The Sui An was sold in 1936 to San Peh S.N. Co. Ltd. Shanghai as the Lung On and was removed from Lloyds Register in 1959/60.
The Sui Tai was sold in 1938 to the same Shanghai company retaining her name. She too was RLR in 1959/6
Na imagem acima o Sui Tai em Hong Kong