Top

The Biblical Ark

TECHNICAL FILE / THE BIBLICAL ARK

The Ark

An interactive education and apologetics laboratory exploring what Genesis describes: dimensions, scale, capacity, structure, construction questions and seaworthiness.

Genesis 6:14–16300 × 50 × 30 cubitsThree decks
Prepared by ArkSearch Editorial TeamLast reviewed October 31, 2026

Scale Laboratory / Interactive

How Large Was It?

Genesis gives the Ark’s proportions as 300 × 50 × 30 cubits. The exact modern conversion depends on the cubit value assumed. Adjust the control to see how that assumption changes the familiar dimensions; the rectangular diagram intentionally shows only the stated proportions, not an inferred hull shape.

Assumed cubit length18.0 in


standard uses an 18-inch working approximation. Ancient cubit lengths varied by place and period.

17.5 in21 in
Length450 ft300 cubits
Width75 ft50 cubits
Height45 ft30 cubits
Floor area101,250 ft²3 full decks

Floor area is a simple three-deck rectangular calculation for scale comparison. It does not assert the exact usable interior area of the historical vessel.

Biblical proportion modelLength : width : height
30 : 5 : 3
450 ft / 300 cubits
45 ft
Compare the stated length

450 ft

360 ft

At this cubit setting, the Ark’s stated length is about 1.25× a football field including end zones.

Ark Features / Interactive

What Genesis Specifies — and What Reconstructions Add

Genesis gives several specific features of the Ark, but it does not describe every construction detail. Gold markers identify features stated in the text. Rust markers identify features that belong to modern reconstruction models. Select a numbered marker to see the difference.

Select a marker1–5 are stated in Genesis · 6–8 are reconstruction choices

1Dimensions2Three decks3Side door4Rooms5Pitch coating6Hull shape7Ramps8Ventilation

Engineering Workbench / Feasibility

What Can Actually Be Tested?

A feasibility argument is strongest when it identifies the constraint first, then asks a testable question. ArkSearch separates calculations that can be modeled from historical details that the biblical text never supplies.

01

Stability & Survival

Textual constraint

A vessel 300 × 50 × 30 cubits, intended to survive a catastrophic Flood rather than navigate a trade route.

Testable question

How do plausible hull forms with those overall proportions behave under loading, waves, roll and pitch?

Model cannot prove

The exact bow, stern, keel, curvature or sea state experienced by the biblical Ark.

Naval-architecture question

02

Structural Strength

Textual constraint

A very large timber vessel with multiple internal levels and compartments.

Testable question

What framing, compartmentalization, timber dimensions and load paths could control bending, racking and local stresses?

Model cannot prove

Which ancient construction system Noah used or what specific species the translated term “gopher wood” denotes.

Structural-engineering question

03

Air, Water & Waste

Textual constraint

Humans and animals remain aboard for an extended voyage; Genesis mentions an opening/tsohar and a side door.

Testable question

What ventilation rates, water storage, feeding schedules and waste-handling systems are workable under different occupancy assumptions?

Model cannot prove

The precise internal ducting, labor schedule, storage containers or sanitation arrangement.

Logistics question

04

Animal Capacity

Textual constraint

The Ark carries representatives of land-animal groups, with additional clean animals and birds specified later in the narrative.

Testable question

How do capacity results change when assumptions about “kind,” animal age, enclosure size, food volume and deck allocation change?

Model cannot prove

A precise passenger count without first defining the biological and taxonomic assumptions used by the model.

Biology & logistics question

Important distinction: a successful model can show that a proposed solution is feasible. It does not demonstrate that the historical vessel used that exact solution.

Key Questions

Explore the Ark’s Scale and Feasibility

Topic 01

Dimensions & Ratios

Length-to-width relationships, cubit assumptions, deck count and useful comparisons with buildings, fields, trains and ships.

Topic 02

Structure & Materials

What “gopher wood” may mean, how ancient large-timber construction worked, and where reconstruction becomes speculation.

Topic 03

Seaworthiness

Stability, proportions, waves, strength, ventilation and the difference between a survival vessel and a navigational ship.

Topic 04

Animal Capacity

How animal-number models depend on taxonomy, age, clean/unclean categories, storage assumptions and the purpose of the voyage.

Topic 05

Food, Water & Waste

Operational questions: provisioning, feeding frequency, water storage, ventilation and sanitation.

Topic 06

Design Models

Compare box-like, barge-like and hydrodynamically modified reconstructions while clearly labeling what is biblical text and what is inference.

Biblical Text & Reconstruction

What Genesis States—and What It Does Not

Genesis gives dimensions and several structural details, but it does not describe every feature of the vessel. Modern reconstructions can help illustrate scale and feasibility without claiming to reproduce the Ark’s exact appearance.