diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..bee8a64
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+__pycache__
diff --git a/coastal/Makefile b/coastal/Makefile
new file mode 100644
index 0000000..cb9771b
--- /dev/null
+++ b/coastal/Makefile
@@ -0,0 +1,18 @@
+TARGETS = format lint test typecheck
+
+.PHONY: $(TARGETS)
+
+all:
+	$(error Valid targets are: $(TARGETS))
+
+format:
+	black *.py
+	isort *.py
+
+lint:
+	pylint *.py
+
+test: lint typecheck
+
+typecheck:
+	mypy *.py
diff --git a/coastal/README.md b/coastal/README.md
new file mode 100644
index 0000000..7127824
--- /dev/null
+++ b/coastal/README.md
@@ -0,0 +1,46 @@
+# Coastal
+
+To execute this driver, in a conda environment where [`uwtools`](https://github.com/ufs-community/uwtools) is [installed](https://uwtools.readthedocs.io/en/stable/sections/user_guide/installation.html):
+
+```
+uw execute --module coastal.py --classname Coastal --task provisioned_rundir --config-file coastal.yaml --cycle 2024-08-05T12 --batch
+```
+
+Afterwards:
+
+```
+$ tree run
+run
+├── albedo.gr3 -> /path/to/data/albedo.gr3
+├── bctides.in -> /path/to/data/bctides.in
+├── datm_in
+├── datm.streams
+├── fd_ufs.yaml -> /path/to/model/tests/parm/fd_ufs.yaml
+├── hgrid.gr3 -> /path/to/data/hgrid.gr3
+├── hgrid.ll -> /path/to/data/hgrid.ll
+├── INPUT
+│   ├── data.nc -> /path/to/data/INPUT/wind_atm_fin_ch_time_vec_STR_fixed.nc
+│   └── esmf_mesh.nc -> /path/to/data/INPUT/wind_atm_fin_ch_time_vec_ESMFmesh.nc
+├── manning.gr3 -> /path/to/data/manning.gr3
+├── model_configure -> /path/to/data/model_configure
+├── noahmptable.tbl -> /path/to/data/noahmptable.tbl
+├── param.nml
+├── RESTART
+├── runscript.coastal
+├── station.in -> /path/to/data/station.in
+├── ufs.configure -> /path/to/data/ufs.configure
+├── vgrid.in -> /path/to/data/vgrid.in
+├── watertype.gr3 -> /path/to/data/watertype.gr3
+└── windrot_geo2proj.gr3 -> /path/to/data/windrot_geo2proj.gr3
+
+2 directories, 19 files
+```
+
+To be run in a conda environment with [`uwtools`](https://github.com/ufs-community/uwtools) installed.
+
+For development/testing, with conda active in your shell:
+
+```
+$ conda env create -f environment.yml
+$ conda activate coastal
+```
diff --git a/coastal/coastal.jsonschema b/coastal/coastal.jsonschema
new file mode 100644
index 0000000..e6307dc
--- /dev/null
+++ b/coastal/coastal.jsonschema
@@ -0,0 +1,3 @@
+{
+  "type": "object"
+}
diff --git a/coastal/coastal.py b/coastal/coastal.py
new file mode 100644
index 0000000..bd7f734
--- /dev/null
+++ b/coastal/coastal.py
@@ -0,0 +1,62 @@
+"""
+A driver for the Coastal App coupled executable.
+"""
+
+from iotaa import asset, task, tasks
+from uwtools.api.cdeps import CDEPS
+from uwtools.api.driver import DriverCycleBased
+from uwtools.api.file import link
+from uwtools.api.logging import use_uwtools_logger
+from uwtools.api.schism import SCHISM
+
+use_uwtools_logger()
+
+
+class Coastal(DriverCycleBased):
+    """
+    A driver for the Coastal App coupled executable.
+    """
+
+    @task
+    def linked_files(self):
+        """
+        Data files linked into the run directory.
+        """
+        links = self.config["links"]
+        path = lambda fn: self.rundir / fn
+        yield self.taskname("Linked files")
+        yield [asset(path(fn), path(fn).is_file) for fn in links.keys()]
+        yield None
+        link(config=links, target_dir=self.rundir)
+
+    @tasks
+    def provisioned_rundir(self):
+        """
+        The run directory provisioned with all required content.
+        """
+        cdeps = CDEPS(config=self.config_full, cycle=self.cycle, controller=self.driver_name)
+        schism = SCHISM(config=self.config_full, cycle=self.cycle, controller=self.driver_name)
+        yield self.taskname("Provisioned run directory")
+        yield [
+            cdeps.atm_nml(),
+            cdeps.atm_stream(),
+            schism.namelist_file(),
+            self.linked_files(),
+            self.restart_dir(),
+            self.runscript(),
+        ]
+
+    @task
+    def restart_dir(self):
+        """
+        RESTART directory in run directory.
+        """
+        path = self.rundir / "RESTART"
+        yield self.taskname("RESTART directory")
+        yield asset(path, path.is_dir)
+        yield None
+        path.mkdir(parents=True)
+
+    @property
+    def driver_name(self):
+        return "coastal"
diff --git a/coastal/coastal.yaml b/coastal/coastal.yaml
new file mode 100644
index 0000000..a75f569
--- /dev/null
+++ b/coastal/coastal.yaml
@@ -0,0 +1,82 @@
+cdeps:
+  atm_in:
+    update_values:
+      datm_nml:
+        datamode: ATMMESH
+        export_all: true
+        factorfn_data: 'null'
+        factorfn_mesh: 'null'
+        flds_co2: false
+        flds_presaero: false
+        flds_wiso: false
+        iradsw: 1
+        model_maskfile: INPUT/esmf_mesh.nc
+        model_meshfile: INPUT/esmf_mesh.nc
+        nx_global: 101
+        ny_global: 101
+        restfilm: 'null'
+  atm_streams:
+    streams:
+      stream01:
+        dtlimit: 1.5
+        mapalgo: redist
+        readmode: single
+        stream_data_files:
+          - INPUT/data.nc
+        stream_data_variables:
+          - uwnd Sa_u10m
+          - vwnd Sa_v10m
+          - P Sa_pslv
+        stream_lev_dimname: 'null'
+        stream_mesh_file: INPUT/esmf_mesh.nc
+        stream_offset: 0
+        stream_vectors: 'null'
+        taxmode: limit
+        tinterpalgo: linear
+        yearAlign: 2008
+        yearFirst: 2008
+        yearLast: 2008
+    template_file: stream.jinja2
+coastal:
+  execution:
+    batchargs:
+      cores: 6
+      export: NONE
+      jobname: coastal
+      partition: hercules
+      queue: batch
+      walltime: '00:30:00'
+    envcmds:
+      - module use {{ dir.model }}/modulefiles
+      - module load ufs_hercules.intel
+    executable: /path/to/ufs_model
+    mpiargs:
+      - '--export=ALL'
+    mpicmd: srun
+  links:
+    INPUT/data.nc: '{{ dir.data }}/INPUT/wind_atm_fin_ch_time_vec_STR_fixed.nc'
+    INPUT/esmf_mesh.nc: '{{ dir.data }}/INPUT/wind_atm_fin_ch_time_vec_ESMFmesh.nc'
+    albedo.gr3: '{{ dir.data }}/albedo.gr3'
+    bctides.in: '{{ dir.data }}/bctides.in'
+    fd_ufs.yaml: '{{ dir.model }}/tests/parm/fd_ufs.yaml'
+    hgrid.gr3: '{{ dir.data }}/hgrid.gr3'
+    hgrid.ll: '{{ dir.data }}/hgrid.ll'
+    manning.gr3: '{{ dir.data }}/manning.gr3'
+    model_configure: '{{ dir.data }}/model_configure'
+    noahmptable.tbl: '{{ dir.data }}/noahmptable.tbl'
+    station.in: '{{ dir.data }}/station.in'
+    ufs.configure: '{{ dir.data }}/ufs.configure'
+    vgrid.in: '{{ dir.data }}/vgrid.in'
+    watertype.gr3: '{{ dir.data }}/watertype.gr3'
+    windrot_geo2proj.gr3: '{{ dir.data }}/windrot_geo2proj.gr3'
+  rundir: run
+dir:
+  test: /path/to/coastal/test/input
+  data: '{{ dir.test }}//data'
+  model: '{{ dir.test }}//model'
+platform:
+  account: me
+  scheduler: slurm
+schism:
+  namelist:
+    template_file: '{{ dir.test }}/param.nml'
diff --git a/coastal/environment.yml b/coastal/environment.yml
new file mode 100644
index 0000000..8be7068
--- /dev/null
+++ b/coastal/environment.yml
@@ -0,0 +1,9 @@
+name: coastal
+channels:
+  - ufs-community
+  - conda-forge
+dependencies:
+  - black
+  - mypy
+  - pylint
+  - uwtools >=2.4.0
diff --git a/coastal/pyproject.toml b/coastal/pyproject.toml
new file mode 100644
index 0000000..76b1404
--- /dev/null
+++ b/coastal/pyproject.toml
@@ -0,0 +1,14 @@
+[tool.black]
+line-length = 100
+
+[tool.isort]
+line_length = 100
+profile = "black"
+
+[tool.mypy]
+check_untyped_defs = true
+pretty = true
+warn_return_any = true
+
+[tool.pylint."messages control"]
+disable = ["unnecessary-lambda-assignment"]
diff --git a/coastal/stream.jinja2 b/coastal/stream.jinja2
new file mode 100644
index 0000000..28ac7cf
--- /dev/null
+++ b/coastal/stream.jinja2
@@ -0,0 +1,33 @@
+{% set stream_info = [] -%}
+{% for key, val in streams.items() -%}
+{% set _ = stream_info.append( key ) -%}
+{% endfor -%}
+stream_info: {{ stream_info | join(' ') }}
+{% for key, val in streams.items() %}
+taxmode{{'%02d' % loop.index}}: {{ val['taxmode'] }}
+mapalgo{{'%02d' % loop.index}}: {{ val['mapalgo'] }} 
+tInterpAlgo{{'%02d' % loop.index}}: {{ val['tinterpalgo'] }}
+readMode{{'%02d' % loop.index}}: {{ val['readmode'] }}
+dtlimit{{'%02d' % loop.index}}: {{ val['dtlimit'] }}
+stream_offset{{'%02d' % loop.index}}: {{ val['stream_offset'] }}
+yearFirst{{'%02d' % loop.index}}: {{ val['yearFirst'] }}
+yearLast{{'%02d' % loop.index}}: {{ val['yearLast'] }}
+yearAlign{{'%02d' % loop.index}}: {{ val['yearAlign'] }}
+{% if val['stream_vectors'] is string -%}
+stream_vectors{{'%02d' % loop.index}}: {{ val['stream_vectors'] }}
+{% else -%}
+stream_vectors{{'%02d' % loop.index}}: "{{ val['stream_vectors'] | join(':') }}"
+{% endif -%}
+stream_mesh_file{{'%02d' % loop.index}}: {{ val['stream_mesh_file'] }}
+stream_lev_dimname{{'%02d' % loop.index}}: {{ val['stream_lev_dimname'] }}
+{% if val['stream_data_files'] | length > 1 -%}
+stream_data_files{{'%02d' % loop.index}}: ""{{ val['stream_data_files'] | join('" "') }}""
+{% else -%}
+stream_data_files{{'%02d' % loop.index}}: "{{ val['stream_data_files'] | first }}"
+{% endif -%}
+{% if val['stream_data_variables'] is string -%}
+stream_data_variables{{'%02d' % loop.index}}: "{{ val['stream_data_variables'] }}"
+{% else -%}
+stream_data_variables{{'%02d' % loop.index}}: "{{ val['stream_data_variables'] | join('" "') }}"
+{% endif -%}
+{% endfor %}