Doors in shipwrecks spawn open but are actually closed. This seems to happen in every shipwreck with a door. To reproduce, use the seed 38945423507718497 and run the following commands:

/tp @p -365 56 286

/tp @p -251 41 -320

/tp @p 2915 49 -1906

/tp @p 837 50 2238

/tp @p 469 42 -3968