Definition
Latin: "a plank in a shipwreck." A metaphor in equity describing the power of a third mortgagee — one who took a mortgage without notice of an intervening second mortgage — to acquire the first mortgage, unite it with his own third-priority interest, and thereby "squeeze out" the second mortgagee, collecting satisfaction ahead of that second claim before it reaches the available fund.
The doctrine operates as follows: ordinarily, mortgages are satisfied in the order of their priority. A third mortgagee, being last in line, might receive nothing if the property's value is exhausted by prior claims. But if that third mortgagee had no actual or constructive notice of the second mortgage at the time he advanced his money, equity permits him to purchase the first mortgage and "tack" it to his own. The second mortgagee is then sandwiched between the consolidated first-and-third claim, and may be effectively shut out. The plank metaphor captures the desperation of the position: a drowning man seizing the only plank available to survive the wreck of his investment.
The doctrine is inseparable from tacking. It is not a freestanding remedy but an application of tacking principles to a specific equitable configuration — three successive mortgages, a bona fide purchaser status in the third, and the absence of notice of the middle encumbrance.
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Common Confusion
TABULA IN NAUFRAGIO vs. TACKING generally: Tacking is the broader doctrine by which a mortgagee or purchaser joins two non-consecutive interests to consolidate priority. Tabula in naufragio is a specific and dramatic application of tacking — the three-party scenario in which a later incumbrancer uses a prior one to destroy an intermediate claim. Rapalje & Lawrence signals this directly, treating the tabula doctrine as a subdivision of tacking. Researchers who index only under "tacking" may miss targeted historical discussions of the tabula scenario, which courts and treatise writers sometimes treat as a distinct equitable controversy.
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Why It Matters in Research
The term appears almost exclusively in older equity practice materials, particularly treatises on mortgage law and equitable priorities. It is a term of art that historical courts and commentators used with precision, and it will not appear in most modern U.S. case law by its Latin name — researchers searching only modern databases under this phrase will find little. The substantive doctrine, however, remains live in some jurisdictions under tacking and bona fide purchaser analysis.
Several research traps apply. First, the term's visibility is heavily dependent on the sophistication of the court or author: chancery-trained writers in the nineteenth century used tabula in naufragio freely; American common law courts often discussed the same doctrine under "tacking" or "consolidation of mortgages" without the Latin phrase. Second, the doctrine's scope shifted between English equity and American reception. English courts, particularly in the era of 2 Vesey Ch. 573 (the Brace v. Duchess of Marlborough line), applied the rule with some regularity; American courts in states with recording act systems often modified or rejected the doctrine because the recording acts resolved notice questions differently, eliminating the condition (absence of notice of the second mortgage) on which the doctrine depends. A researcher finding broad statements of the tabula doctrine in English equity sources must verify American reception jurisdiction by jurisdiction.
Third, the doctrine is historically tied to the requirement that the third mortgagee have no notice — actual or constructive — of the second at the time of his advance. The development of modern recording acts, which impute constructive notice of all recorded instruments, effectively killed the tabula doctrine in most American jurisdictions as a practical matter, because a properly recorded second mortgage destroys the "without notice" condition. This means historical sources will read as if the doctrine is vigorous while modern law has largely rendered it obsolete through recording mechanics rather than direct abrogation.
For corpus researchers, connections run principally through equity jurisprudence, the law of mortgages, tacking, and bona fide purchaser doctrine.
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Historical Dictionary Support
Black's Law Dictionary (1st and 2nd editions) are in close agreement, giving virtually identical definitions and citing the same authorities: Story's Equity Jurisprudence § 414 and 2 Ves. Ch. 573. Story's Equity Jurisprudence remains the controlling American treatise reference for the doctrine; the Vesey citation points to English chancery practice. Both editions of Black's capture the essential mechanism — third mortgagee, no notice of second, acquisition of first, squeezing out the second — without significant variation between editions.
Rapalje & Lawrence is more compressed, describing the position as analogous to one "who had advanced the amounts of a plank in a wreck," and directing the reader to the tacking entry rather than developing the doctrine independently. This editorial choice reflects Rapalje & Lawrence's view that tabula in naufragio is a subtype, not a standalone doctrine. That framing is useful for researchers because it signals where the substantive discussion lives in that dictionary.
What the historical dictionaries do not address: the effect of American recording acts on the doctrine's viability, the variation in American state reception, or the practical obsolescence of the rule in notice-imputing jurisdictions. Researchers relying solely on these dictionary entries will receive accurate historical description but an incomplete picture of the doctrine's American fate.
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Jurisdictional Note
In English equity, the doctrine was recognized and applied. American reception was uneven: courts in jurisdictions with strong recording acts — which impute constructive notice of all recorded instruments — effectively negated the "without notice" predicate, making the doctrine inapplicable in most cases. Researchers should not assume that broad English or early American equity statements of the rule reflect current law in any given state.
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