american Grace Line Inc. - W. R. Grace & Co. SS Santa Leonor [+1968]
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nationality american
purpose transport
type cargo ship
propulsion steam turbine
date built 1944
is nickname no
live live
weight (tons) 8007  grt
dimensions 150 x 21.1 x 9.1 m
material steel
engine one General Electric geared drive turbine; two Foster-Wheeler D-type boilers; single propeller.
power 8500  s.h.p.
speed 16.5  knots
yard no. 870
IMO/Off. no. 524209
about the loss
cause lost ran aground (wrecked)
date lost 31/03/1968  [dd/mm/yyyy]
about people
Ingalls Shipbuilding Corp., Pascagoula
engine by
General Electric Co.
last owner
[1]Grace Line Inc. - W. R. Grace & Co., New York
SS Santa Leonor [+1968]
period 1966 ~ 1968
IMO/Off. no.: 524209
prev. owners
[2]Moore & Mccormack, Mooremack Lines, American Scantic Lines, New York
SS Mormacwave
period 1957 ~ 1966
IMO/Off. no.: 524209
[3]Pope & Talbot Inc., San Francisco
SS P & T Forrester
period 1947 ~ 1957
IMO/Off. no.: 252525
[4]Us Navy - United States Navy
Riverside (APA-102)
period 1944 ~ 1946
captain Johnson Donald
no. of crew 51
no. of passengers 7
about the wreck
depth (m.)
position on seabed to starboard
visibility excellent
current normal
protected no
war grave yes
entered by Vleggeert Nico
entered 21/08/2008
last update M.K.
last update 01/08/2014
[1] Lettens Jan06/10/2010
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  The Wreck today  
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  Hydrographic Service UK  
Lettens Jan06/10/2010On March 31st 1968, the merchant Santo Leonor (Capt. Ernesto Ruíz Muñoz) ran aground in Paso Shoal on the Adelaide rocks in Paso Shoal, Chile. The Santo Leonor was owned by the Grace Line and was used in the Buenos Aires-Valparaiso line. The crew of 51 and 7 passengers were saved by the tug Colo-Colo.
M.K.02/04/2014link ex-SS Santa Leonor in Isabel Island, Paso Shoal, Magellan Strait, Chile ex USS Riverside (APA-102) Bayfield-class Attack transport; built 1944 by Ingalls Shipbuilding Corp. Pascagoula; Yard no. 870 ex P & T Forester; ex Mormacwave; L x B x D: 150.11 x 21.18 x 8.08 m; stranded March 31, 1968/still there partially submerged
ref. used:
Avec4330/08/2012Navire construit comme transport pour L'US Navy et configuré pour 575 hommes d'équipage et 1740 passagers. Sa carrière militaire se fit dans le Pacifique transportant troupes et blessés. Au moment de l'accident il se rendait de Rio de Janeiro vers Vancouver (Canada), sous le commandement du capitaine Donald Johnson et gouverné par le pilote chilien Ernest Ruiz Muñoz. Il heurta un récif au SO de l'île Isabel, puis dériva jusqu'à ilôt Adelaide où il se coucha sur le flanc tribord . Naufrage attribué à une erreur de navigation

Ship built as transport for the U.S. Navy and configured for 575 crew and 1740 passengers. Her military career took place in the Pacific carrying troops and wounded. At the time of the accident she was travelling from Rio de Janeiro to Vancouver (Canada), under the command of Captain Donald Johnson and governed by the Chilean pilot Ernest Ruiz Muñoz. She hit a reef at SW of Isabel Island, then drifted to Adelaide island where she laid on the starboard side. Shipwreck attributed to a navigational error

Buque de transporte construido para la Marina de los EE.UU. y configurado para 575 tripulantes y pasajeros 1740. Su carrera militar se llevó a cabo en las tropas que transportan Pacífico y heridos. En el momento del accidente viajaba de Río de Janeiro a Vancouver (Canadá), bajo el mando del capitán Donald Johnson y gobernado por el piloto chileno Ernesto Ruiz Muñoz. Chocó un arrecife al SW de la isla Isabela, luego derivó hacia el islote Adelaida, donde se recostó sobre el lado estribor. Naufragio atribuido a un error de navegación

Navio construído como transporte para a Marinha dos EUA e configurado para 575 tripulantes e 1740 passageiros. Sua carreira militar teve lugar no Pacífico transportando tropas e feridos. No momento do acidente, viajava do Rio de Janeiro para Vancouver (Canadá), sob o comando do capitão Donald Johnson e dirigido pelo piloto chileno Ernest Ruiz Muñoz. Bateu um recife ao SO da ilha Isabel, e derivou até o ilheu Adelaide, onde ele ficou deitado no lado estibordo. Naufrágio atribuído a um erro de navegação
Allen Tony06/10/2010Santo Leonor lies wrecked on the Paso Shoal, Chile.
ref. used:
Vleggeert Nico21/08/2008Ex- Riverside, ex- P & T Forester, ex- Mormacwave, 1966 purchased from Moore-McCormack Line renamed Santa Leonor, 1968 ashore on Isabel island, Straits of Magellan, abandoned and later sank.
ref. used:
Lettens Jan28/08/2008UK hydro member
ref. used: 
 UK Hydrographic Office

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About Builders
 Ingalls Shipbuilding Corp., Pascagoula
Ingalls Shipbuilding was developed by Ingalls Iron Works in 1939, on the east bank of the Pascagoula River. It was built in anticipation of the U.S. Maritime Commission's long-range shipbuilding program and its four ways were increased to six in the third wave of shipbuilding expansion, with $7mm from the USMC and $4mm from the Navy. The yard continued in operation after the war and was bought by Litton Industries in 1961. It was then significantly enlarged, with the aid of the State of Mississippi, creating what was called "The Shipyard of the Future" on the west bank of the river. Litton was bought by Northrop Grumman in 2001 and Ingalls was integrated with Avondale as Northrop Grumman Ship Systems. In 2008, Ship Systems was integrated with Newport News as Northrop Grumman Shipbuilding. In March 2011, the yard was spun off, together with Newport News, as Huntington Ingalls Industries, with each yard taking back its old name. Visit the new company at

The earlier hull numbers were sequential, but were part of the series initiated by the parent company, Ingalls Iron Works, in Decatur AL. After the war there appears to be only one series for a while but the Pascagoula numbers relate to vessels built later than those built in Decatur. Pascagoula appears to have started its own sequential series in about 1955, although there are many gaps, which suggests that these numbers were also used for repairs, conversions and other contracts. Since about 1975, the hull numbers have run in disconnected series that loosely relate to the type of vessel.

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SS Santa Leonor [+1968]
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